Upgrade checkout refs and docs to v7 (#779)

* chore: upgrade checkout/setup-go refs to v7

* chore: commit remaining dependency, license, and dist updates

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

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checking out
-        uses: actions/checkout@v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Publish
         id: publish
         uses: actions/publish-immutable-action@v0.0.4