Use the private Codecov token stored as a secret,

to work around rate-limiting issues like codecov/codecov-action#557

Author: oSoMoN

.github/workflows/ci.yml

@@ -143,9 +143,8 @@ jobs:
         echo "report=${COVERAGE_REPORT_FILE}" >> $GITHUB_OUTPUT
     - name: Upload coverage results (to Codecov.io)
       uses: codecov/codecov-action@v3
-      # if: steps.vars.outputs.HAS_CODECOV_TOKEN
       with:
-        # token: ${{ secrets.CODECOV_TOKEN }}
+        token: ${{ secrets.CODECOV_TOKEN }}
         file: ${{ steps.coverage.outputs.report }}
         ## flags: IntegrationTests, UnitTests, ${{ steps.vars.outputs.CODECOV_FLAGS }}
         flags: ${{ steps.vars.outputs.CODECOV_FLAGS }}