Fix codecov reports (#545)

Author: JR-Morgan

.github/workflows/release.yml

@@ -101,7 +101,7 @@ jobs:
       - name: Upload coverage reports to Codecov with GitHub Action
         uses: codecov/codecov-action@v5
         with:
-          file: Converters/**/coverage.xml
+          files: Converters/**/coverage.xml
           token: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Push to nuget.org