Bump CI action versions

Author: amake

.github/workflows/dart.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dart-lang/setup-dart@v1
     - name: Install dependencies
       run: dart pub get