add update_dependencies job

Author: sensuikan1973

.github/workflows/update_dependencies.yaml

@@ -0,0 +1,32 @@
+name: Flutter_Test
+
+on:
+  push:
+    branches:
+      - cron_update_pacakges
+  schedule:
+    - cron: 0 15 * * *
+
+jobs:
+  flutter_widget_test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: 'beta'
+      - name: Workaround for https://github.com/subosito/flutter-action/issues/39
+        run: flutter channel beta && flutter upgrade
+      - run: pub global activate pubspec_update # See: https://pub.dev/packages/pubspec_update
+      - run: pubspec_update --force
+      - name: install hub
+        uses: geertvdc/[email protected]
+      - name: create PR
+          env:
+            GITHUB_USER: ${{ secrets.GITHUB_USER }}
+            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          run: |
+            hub pull-request -b master -m "[Scheduled] update dependencies"