Update coverage.yml

Signed-off-by: Derek Gooding <djgooding@live.com>

Author: DerekGooding

.github/workflows/coverage.yml

@@ -29,10 +29,5 @@ jobs:
         run: dotnet test --no-build --collect:"XPlat Code Coverage"
 
       - name: Upload to Codecov
-        uses: codecov//github-action@v2
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          files: ./TestResults/**/*.xml
-          flags: unittests
-          name: codecov-coverage
+        uses: coverallsapp/github-action@v2
+