clear unity locks

Author: jinliu9508

.github/workflows/create-release-pr.yml

@@ -188,6 +188,11 @@ jobs:
           sed -i '' "s/setSdkVersion:@\"[0-9]*\"/setSdkVersion:@\"${PADDED_VERSION}\"/" \
             com.onesignal.unity.ios/Runtime/Plugins/iOS/UIApplication+OneSignalUnity.mm
 
+      - name: Cleaning up Unity locks
+        run: |
+          pkill -f Unity || true
+          rm -f OneSignalExample/Temp/UnityLockfile
+          
       - name: Run UpdateProjectVersion
         uses: buildalon/unity-action@v3
         with: