Create snapshot branch as part of release

.github/workflows/release.yaml

@@ -14,6 +14,8 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v4
         with:
+          fetch-depth: 0
+          fetch-tags: true
           submodules: recursive
       - name: Use Node.js
         uses: actions/setup-node@v4
@@ -33,8 +35,12 @@ jobs:
           git config user.email 'github-actions[bot]@users.noreply.github.com'
       - name: Update stable branch
         run: |
-          git fetch --unshallow
           git checkout stable
           git pull
           git merge --no-ff main -m "Publish to stable"
           git push
+      - name: Create snapshot
+        run: |
+          suffix=$(git rev-parse --short HEAD)
+          git checkout -b snapshot-${suffix}
+          git push origin snapshot-${suffix}