Updated action to not check for OS in codecov upload step

Author: abeckDev

.github/workflows/dotnet-ci.yml

@@ -31,7 +31,6 @@ jobs:
       run: dotnet test --no-build --configuration Release --verbosity normal --collect:"XPlat Code Coverage" --results-directory ./TestResults
 
     - name: Upload coverage reports to Codecov
-      if: matrix.os == 'ubuntu-latest'
       uses: codecov/codecov-action@v5
       with:
         directory: ./TestResults