chore(deps): pin github action dependencies (#16923)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/build-mobile.yml

@@ -22,9 +22,9 @@ jobs:
       should_run: ${{ steps.found_paths.outputs.mobile == 'true' || steps.should_force.outputs.should_force == 'true' }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - id: found_paths
-        uses: dorny/paths-filter@v3
+        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3
         with:
           filters: |
             mobile:
@@ -51,18 +51,18 @@ jobs:
           ref="${input_ref:-$github_ref}"
           echo "ref=$ref" >> $GITHUB_OUTPUT
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           ref: ${{ steps.get-ref.outputs.ref }}
 
-      - uses: actions/setup-java@v4
+      - uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # v4
         with:
           distribution: 'zulu'
           java-version: '17'
           cache: 'gradle'
 
       - name: Setup Flutter SDK
-        uses: subosito/flutter-action@v2
+        uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1 # v2
         with:
           channel: 'stable'
           flutter-version-file: ./mobile/pubspec.yaml
@@ -89,7 +89,7 @@ jobs:
           flutter build apk --release --split-per-abi --target-platform android-arm,android-arm64,android-x64
 
       - name: Publish Android Artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4
         with:
           name: release-apk-signed
           path: mobile/build/app/outputs/flutter-apk/*.apk