chore(deps): bump actions/checkout from 3 to 4 (#78)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/main.yaml

@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 🎯 Setup Dart
         uses: dart-lang/setup-dart@v1