Merge pull request #382 from modelix/ci/restrict-release-workflow

ci: restrict release workflow to main

Author: mhuster23

.github/workflows/release.yaml

@@ -8,6 +8,7 @@ jobs:
   release:
     name: Run semantic release
     runs-on: ubuntu-latest
+    if: ${{ github.ref == 'refs/heads/main' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3