CI: Don't fail run when upload to Codecov fails

Author: amotl

.github/workflows/test.yml

@@ -40,4 +40,5 @@ jobs:
       - name: Upload coverage results to Codecov
         uses: codecov/codecov-action@v2
         with:
-          fail_ci_if_error: true
+          fail_ci_if_error: false
+        continue-on-error: true

CHANGELOG.md

@@ -22,6 +22,7 @@
 * Add `MANIFEST.in` to exclude specific files from `sdist` package
 * CI: Update from `pep517.build` to `build`
 * CI: Modernize package versions
+* CI: Don't fail run when upload to Codecov fails
 
 
 <a name="1.0.3"></a>