Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/publish-immutable-actions.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checking out
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Publish
         id: publish
         uses: actions/publish-immutable-action@v0.0.4

.github/workflows/versions.yml

@@ -20,7 +20,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go Stable
         uses: ./
         with:
@@ -35,7 +35,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go oldStable
         uses: ./
         with:
@@ -57,7 +57,7 @@ jobs:
           - os: macos-latest-large
             architecture: x32
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go ${{ matrix.version }} ${{ matrix.architecture }}
         uses: ./
         with:
@@ -82,7 +82,7 @@ jobs:
             go: 1.23.2
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -101,7 +101,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
         go-version: ['1.20', '1.21', '1.22', '1.23']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -117,7 +117,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -133,7 +133,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -149,7 +149,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -165,7 +165,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go from .go-version file
         uses: ./
         with:
@@ -183,7 +183,7 @@ jobs:
         go: [1.20.14, 1.21.10, 1.22.8, 1.23.2]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -203,7 +203,7 @@ jobs:
         go: [1.11.12]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -231,7 +231,7 @@ jobs:
           - os: macos-latest-large
             architecture: x64
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:

.github/workflows/windows-validation.yml

@@ -19,7 +19,7 @@ jobs:
         cache: [false, true]
         go: [1.20.1]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup ${{ matrix.cache }}, cache: ${{ matrix.go }}'
         uses: ./
@@ -88,7 +88,7 @@ jobs:
       matrix:
         cache: [false, true]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup default go, cache: ${{ matrix.cache }}'
         uses: ./
@@ -121,7 +121,7 @@ jobs:
         cache: [false]
         go: [1.20.1]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup ${{ matrix.go }}, cache: ${{ matrix.cache }}'
         uses: ./

README.md

@@ -316,68 +316,6 @@ steps:
 
 > **Note**: If caching fails, the action logs a warning but continues execution without interrupting your workflow.
 
-**Restore-Only Cache**
-
-```yaml
-# In some workflows, you may want to restore a cache without saving it. This can help reduce cache writes and storage usage in workflows that only need to read from cache
-jobs:
-    build:
-      runs-on: ${{ matrix.os }}
-      strategy:
-        matrix:
-          os: [ubuntu-latest, macos-latest, windows-latest]
-      steps:
-        - uses: actions/checkout@v6
-        - name: Setup Go
-          id: setup-go
-          uses: actions/setup-go@v6
-          with:
-            go-version: '1.24.10'
-            cache: false
-        # Capture Go cache locations
-        - name: Set Go cache variables (Linux/macOS)
-          if: runner.os != 'Windows'
-          run: |
-            echo "GO_MOD_CACHE=$(go env GOMODCACHE)" >> $GITHUB_ENV
-            echo "GO_BUILD_CACHE=$(go env GOCACHE)" >> $GITHUB_ENV
-        - name: Set Go cache variables (Windows)
-          if: runner.os == 'Windows'
-          shell: pwsh
-          run: |
-            echo "GO_MOD_CACHE=$(go env GOMODCACHE)" | Out-File $env:GITHUB_ENV -Append
-            echo "GO_BUILD_CACHE=$(go env GOCACHE)"   | Out-File $env:GITHUB_ENV -Append
-        # Normalize runner.arch to lowercase to ensure consistent cache keys
-        - name: Normalize runner architecture (Linux/macOS)
-          if: runner.os != 'Windows'
-          shell: bash
-          run: echo "ARCH=$(echo '${{ runner.arch }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
-        - name: Normalize runner architecture (Windows)
-          if: runner.os == 'Windows'
-          shell: pwsh
-          run: |
-            $arch = "${{ runner.arch }}".ToLower()
-            echo "ARCH=$arch" | Out-File $env:GITHUB_ENV -Append
-        - name: Set cache OS suffix for Linux
-          if: runner.os == 'Linux'
-          shell: bash
-          run: echo "CACHE_OS_SUFFIX=$ImageOS-" >> $GITHUB_ENV    
-        - name: Restore Go cache
-          id: go-cache
-          uses: actions/cache/restore@v5
-          with:
-            path: |
-              ${{ env.GO_MOD_CACHE }}
-              ${{ env.GO_BUILD_CACHE }}
-            key: setup-go-${{ runner.os }}-${{ env.ARCH }}-${{ env.CACHE_OS_SUFFIX }}go-${{ steps.setup-go.outputs.go-version }}-${{ hashFiles('**/go.sum') }}
-        - name: Download modules
-          run: go mod download
-        - name: Build
-          run: go build ./...
-```
-> If there are several builds on the same repo it might make sense to create a cache in one build and use it in the
-others. The action [actions/cache/restore](https://github.com/actions/cache/tree/main/restore#only-restore-cache)
-should be used in this case.
-
 ### Matrix Testing
 
 Test across multiple Go versions: