Fix Github check workflow.

Author: covers1624

.github/workflows/check.yml

@@ -11,10 +11,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Setup JDK 1.8
-      uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - name: Setup Java
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
+        java-version: 21
+        distribution: 'temurin'
     - name: Build
-      run: ./gradlew build
+      run: ./gradlew check