Remove restriction to master branch in release workflow

Author: joschi

.github/workflows/release.yml

@@ -15,7 +15,6 @@ env:
 jobs:
   release:
     runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/master'
     steps:
       - uses: actions/[email protected]
       - name: Set up JDK 11