Merge pull request #409 from provokateurin/dependabot/github_actions/actions/checkout-3

build(deps): bump actions/checkout from 2 to 3

.github/workflows/publish.yaml

@@ -17,7 +17,7 @@ jobs:
       build_number: ${{ steps.build_number.outputs.BUILD_NUMBER }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set flutter version
         id: flutter_version
@@ -32,7 +32,7 @@ jobs:
     needs: setup
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - uses: subosito/flutter-action@v2
         with:
           flutter-version: ${{ needs.setup.outputs.flutter_version }}
@@ -93,7 +93,7 @@ jobs:
     needs: setup
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - uses: subosito/flutter-action@v2
         with:
           flutter-version: ${{ needs.setup.outputs.flutter_version }}
@@ -128,7 +128,7 @@ jobs:
     needs: setup
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set docker image
         id: docker_image
         run: |