Merge remote-tracking branch 'origin/master'

.github/workflows/dart.yml

@@ -9,9 +9,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/setup-java@v2.5.0
         with:
-          java-version: '12.x'
+          distribution: 'temurin'
+          java-version: '11'
       - uses: subosito/flutter-action@v2.3.0
       - name: Version
         run: flutter doctor -v
@@ -20,4 +21,4 @@ jobs:
       - name: Format
         run: flutter format -n --set-exit-if-changed .
       - name: Linter
-        run: flutter analyze
+        run: flutter analyze