Update CI (#2406)

+ Fix post to Telegram
+ Make ccache read-only in all but the master branch
+ Delete any files in the Gradle User Home that were not used by Gradle during the GitHub Actions workflow

.github/workflows/core.yml

@@ -48,6 +48,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
+        with:
+          gradle-home-cache-cleanup: true
 
       - name: Checkout libxposed/api
         uses: actions/checkout@v3
@@ -67,6 +69,7 @@ jobs:
           max-size: 2G
           key: ${{ runner.os }}
           restore-keys: ${{ runner.os }}
+          save: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
 
       - name: Build dependencies
         working-directory: libxposed
@@ -84,15 +87,11 @@ jobs:
 
       - name: Build with Gradle
         run: |
-          [ $(du -s ~/.gradle/wrapper | awk '{ print $1 }') -gt 250000 ] && rm -rf ~/.gradle/wrapper/* || true
-          find ~/.gradle/caches -exec touch -d "2 days ago" {} + || true
-          echo 'org.gradle.caching=true' >> gradle.properties
           echo 'org.gradle.parallel=true' >> gradle.properties
           echo 'org.gradle.vfs.watch=true' >> gradle.properties
           echo 'org.gradle.jvmargs=-Xmx2048m' >> gradle.properties
           echo 'android.native.buildOutput=verbose' >> gradle.properties
           sed -i 's/org.gradle.unsafe.configuration-cache=true//g' gradle.properties
-          echo 'buildCache { local { removeUnusedEntriesAfterDays = 1 } }' >> settings.gradle.kts
           ./gradlew zipAll
 
       - name: Prepare artifact
@@ -147,7 +146,7 @@ jobs:
           path: build/symbols
 
       - name: Post to channel
-        if: ${{ success() && github.event_name != 'pull_request' && github.ref == 'refs/heads/master' && github.ref_type != 'tag' && inputs.post_telegram != false }}
+        if: ${{ success() && github.event_name != 'pull_request' && github.ref == 'refs/heads/master' && github.ref_type != 'tag' && inputs.post_telegram != 'false' }}
         env:
           CHANNEL_ID: ${{ secrets.CHANNEL_ID }}
           DISCUSSION_ID: ${{ secrets.DISCUSSION_ID }}