fix update gradle wrapper GitHub action (#1612)

Author: hankem

.github/workflows/update-gradle-wrapper.yml

@@ -3,13 +3,16 @@ name: Update Gradle Wrapper
 on:
   schedule:
     - cron: "0 0 * * *"
+  workflow_dispatch:
 
 jobs:
   update-gradle-wrapper:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Install Gradle JDK
         uses: actions/setup-java@v5.2.0