Bump GitHub Actions versions (#1115)

.github/dependabot.yaml

@@ -1,6 +1,10 @@
 version: 2
 enable-beta-ecosystems: true
 updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
   - package-ecosystem: "pub"
     directory: "add_to_app/android_view/flutter_module_using_plugin/"
     schedule:

.github/workflows/main.yml

@@ -23,33 +23,36 @@ jobs:
         flutter_version: [stable, beta]
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/checkout@dcd71f646680f2efd8db4afa5ad64fdcba30e748
+      - uses: actions/setup-java@9519cf1382ac8dc61ad461f7f7cb45f033220189
         with:
-          java-version: '12.x'
-      - uses: subosito/flutter-action@4389e6cbc6cb8a4b18c628ff96ff90be0e926aa8
+          distribution: 'zulu'
+          java-version: "12.x"
+      - uses: subosito/flutter-action@6a13bd08366a2aafe8605f064f9d5a42107e6f1f
         with:
           channel: ${{ matrix.flutter_version }}
       - run: ./tool/flutter_ci_script_${{ matrix.flutter_version }}.sh
   android-build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/checkout@dcd71f646680f2efd8db4afa5ad64fdcba30e748
+      - uses: actions/setup-java@9519cf1382ac8dc61ad461f7f7cb45f033220189
         with:
-          java-version: '12.x'
-      - uses: subosito/flutter-action@4389e6cbc6cb8a4b18c628ff96ff90be0e926aa8
+          distribution: 'zulu'
+          java-version: "12.x"
+      - uses: subosito/flutter-action@6a13bd08366a2aafe8605f064f9d5a42107e6f1f
         with:
           channel: stable
       - run: ./tool/android_ci_script.sh
   ios-build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/checkout@dcd71f646680f2efd8db4afa5ad64fdcba30e748
+      - uses: actions/setup-java@9519cf1382ac8dc61ad461f7f7cb45f033220189
         with:
-          java-version: '12.x'
-      - uses: subosito/flutter-action@4389e6cbc6cb8a4b18c628ff96ff90be0e926aa8
+          distribution: 'zulu'
+          java-version: "12.x"
+      - uses: subosito/flutter-action@6a13bd08366a2aafe8605f064f9d5a42107e6f1f
         with:
           channel: stable
       - run: ./tool/ios_ci_script.sh