update github actions

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1914235 13f79535-47bb-0310-9956-ffa450edef68

Author: pjfanning

.github/workflows/test-gradle.yml

@@ -17,10 +17,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up JDK
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
         java-version: '11'