main.yml: add Gradle-wrapper validation to several jobs

.github/workflows/main.yml

@@ -69,7 +69,8 @@ jobs:
         uses: actions/checkout@v1
         with:
           fetch-depth: 1
-
+      - name: Validate the Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
       - name: Build
         run: |
           # Build
@@ -96,10 +97,11 @@ jobs:
         uses: actions/checkout@v1
         with:
           fetch-depth: 1
-
+      - name: Validate the Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
       - name: Build
         run: |
-          gradle -PuseCommitHashAsVersionName=true --no-daemon -PbuildNativeProjects=true \
+          ./gradlew -PuseCommitHashAsVersionName=true --no-daemon -PbuildNativeProjects=true \
           :jme3-android-native:assemble \
           :jme3-bullet-native-android:assemble
 
@@ -138,7 +140,8 @@ jobs:
         with:
           java-version: ${{ matrix.jdk }}
           architecture: x64
-          
+      - name: Validate the Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
       - name: Build Natives
         shell: bash
         env:
@@ -233,7 +236,8 @@ jobs:
         with:
           name: linuxarm-natives
           path: build/native
-                                                     
+      - name: Validate the Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
       - name: Build Engine
         shell: bash
         run: |