GitHub actions update

Author: ToastTextures

.github/workflows/build.yml

@@ -11,20 +11,21 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: checkout repository
-        uses: actions/checkout@v4
-      - name: validate gradle wrapper
-        uses: gradle/actions/wrapper-validation@v4
+        uses: actions/checkout@v6
       - name: setup jdk
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
-          java-version: '25'
-          distribution: 'microsoft'
-      - name: make gradle wrapper executable
-        run: chmod +x ./gradlew
+          java-version: '21'
+          distribution: 'graalvm'
+          cache: 'gradle'
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: false
       - name: build
         run: ./gradlew build
       - name: capture build artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: Artifacts
           path: build/libs/