GH-23 Fix gradle workflow

Author: imDMK

.github/workflows/gradle.yml

@@ -7,7 +7,11 @@
 
 name: Java CI with Gradle
 
-on: [ push ]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 permissions:
   contents: read
@@ -16,21 +20,21 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up JDK 17
-      uses: actions/setup-java@v3
-      with:
-        java-version: '17'
-        distribution: 'temurin'
-        
-    - name: Setup Gradle
-      uses: gradle/gradle-build-action@v2
-    
-    - name: Make gradlew executable
-      run: chmod +x ./gradlew
-        
-    - name: Execute Gradle build
-      run: ./gradlew build
-
-    - name: Build the Jar
-      run: ./gradlew clean shadowJar
+      - uses: actions/checkout@v3
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2.8.0
+
+      - name: Make gradlew executable
+        run: chmod +x ./gradlew
+
+      - name: Execute Gradle build
+        run: ./gradlew build
+
+      - name: Build the Jar
+        run: ./gradlew shadowJar