ci(#19): add wrapper validation, remote build cache, and drop dependency-submission (#20)

* ci(#19): add wrapper validation, remote build cache, and dependency submission

* ci(#19): remove flaky dependency-submission job — core CI is enough

---------

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

.github/workflows/android.yml

@@ -28,6 +28,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v3
+
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
@@ -36,6 +39,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTED_KEY }}
 
       - name: Grant Execute Permission for Gradlew
         run: chmod +x gradlew
@@ -72,6 +77,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v3
+
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
@@ -80,6 +88,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTED_KEY }}
 
       - name: Grant Execute Permission for Gradlew
         run: chmod +x gradlew
@@ -106,6 +116,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v3
+
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
@@ -114,6 +127,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTED_KEY }}
 
       - name: Grant Execute Permission for Gradlew
         run: chmod +x gradlew
@@ -141,6 +156,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v3
+
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
@@ -149,6 +167,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTED_KEY }}
 
       - name: Grant Execute Permission for Gradlew
         run: chmod +x gradlew