Disable codecov from failing CI if there is an upload issue (#3353)

### Description
Seeing a ton of CI failures due to code coverage upload failures. I'd
like to fix this - but I'd rather keep the builds flowing in until we
have a better solution.

E.g:
https://github.com/opensearch-project/security/actions/runs/6153593099/job/16697726519?pr=3339

- Related #2649

### Check List
- [ ] New functionality includes testing
- [ ] New functionality has been documented
- [X] Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and
signing off your commits, please check
[here](https://github.com/opensearch-project/OpenSearch/blob/main/CONTRIBUTING.md#developer-certificate-of-origin).

Signed-off-by: Peter Nied <petern@amazon.com>
(cherry picked from commit 6d78bce)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
         action: codecov/codecov-action@v3
         with: |
           token: ${{ secrets.CODECOV_TOKEN }}
-          fail_ci_if_error: true
+          fail_ci_if_error: false
           files: ./build/reports/jacoco/test/jacocoTestReport.xml
 
     - uses: actions/upload-artifact@v3