Add pulling prior pushing

.github/workflows/update-gradle.yml

@@ -29,6 +29,7 @@ jobs:
           git config user.name "Gradle Updater"
           git config user.email "[email protected]"
           git switch -c update-gradle
+          git pull --rebase
           git add gradle gradlew
           git commit -m "Bump Gradle wrapper to latest"
           git push --set-upstream origin $(git rev-parse --abbrev-ref HEAD)