Fix conditional expression for maven central release

Author: Ndiritu

.github/workflows/preview-and-release.yml

@@ -54,7 +54,7 @@ jobs:
         run: ./gradlew $PREVIEW_TASK
 
   maven_Release:
-    if: startsWith(github.ref, 'refs/tags/') && ${{ github.actor == 'release-please[bot]' }}
+    if: ${{ startsWith(github.ref, 'refs/tags/') && github.actor == 'release-please[bot]' }}
     environment:
       name: maven_central_release
     runs-on: ubuntu-latest