Merge pull request #262 from AppleCommander/dependabot/github_actions/gradle/actions-6

Bump gradle/actions from 4 to 6

.github/workflows/gradle.yml

@@ -32,7 +32,7 @@ jobs:
         java-version: '21'
         distribution: 'temurin'
     - name: Setup Gradle
-      uses: gradle/actions/setup-gradle@v4
+      uses: gradle/actions/setup-gradle@v6
     - name: Build with Gradle
       env:
         # The SWT image tests fail in the pipeline; disable them.