Merge pull request #510 from juliuscanute/dependabot/github_actions/actions/checkout-3

Bump actions/checkout from 2 to 3

.github/workflows/dart.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'