ci: sync v1 release branch on each new release (#366)

Author: PaulRBerg

.github/workflows/sync.yml

@@ -0,0 +1,29 @@
+name: Sync Release Branch
+
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  sync-release-branch:
+    runs-on: ubuntu-latest
+    if: startsWith(github.event.release.tag_name, 'v1')
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          ref: v1
+
+      - name: Configure Git
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+
+      - name: Sync Release Branch
+        run: |
+          git fetch --tags
+          git checkout v1
+          git reset --hard ${GITHUB_REF}
+          git push --force