chore: upgrade GitHub Actions workflow

Author: nanotaboada

.github/workflows/dotnet.yml

@@ -16,9 +16,9 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Setup .NET 7
-      uses: actions/setup-dotnet@v3
+      uses: actions/setup-dotnet@v4
       with:
         dotnet-version: 7.0.x
     - name: Restore dependencies
@@ -28,6 +28,6 @@ jobs:
     - name: Run unit tests and collect coverage
       run: dotnet test --no-build --collect:"XPlat Code Coverage"
     - name: Upload coverage reports to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         token: ${{ secrets.CODECOV_TOKEN }}