Remove Gradle build cache step from workflow

Removed caching for Gradle build artifacts in CI workflow.

Author: LuggaPugga

.github/workflows/test-build.yml

@@ -0,0 +1,21 @@
+name: Build
+on: [ pull_request, push ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v6
+      - name: Setup Java
+        uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: 21
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Test with Gradle
+        run: ./gradlew test