Codecov improvements (#572)

Author: sbryngelson

.github/workflows/coverage.yml

@@ -40,10 +40,10 @@ jobs:
         run: /bin/bash mfc.sh test -a -j $(nproc)
 
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v4.5.0
+        uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          fail_ci_if_error: true
+          fail_ci_if_error: false
           verbose: true
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}