Add secrets.CODECOV_TOKEN

.github/CONTRIBUTING.md

@@ -55,8 +55,9 @@ For the full CI gambit, the following repository configuration must be set:
 - Setting `Workflow Permissions` to `Read and write permissions`: Enables CodeQL uploads and GitHub Actions comments.
 ![image](https://github.com/tgstation/tgstation-server/assets/8171642/ab17fa74-364f-4e66-b7c4-b9bb24c6a599)
 - Label `CI Cleared`: To allow PRs from forks to run CI with secrets after approval.
-- Integration [CodeCov](https://github.com/apps/codecov): Enables CodeCov status checks.
 - Variable `TGS_ENABLE_CODE_QL` to `true`: Enables CodeQL scanning in actions.
+- Integration [CodeCov](https://github.com/apps/codecov): Enables CodeCov status checks.
+- Secret `CODECOV_TOKEN`: A CodeCov repo token to work around https://github.com/codecov/codecov-action/issues/837.
 - Secret `LIVE_TESTS_TOKEN`: A GitHub token with read access to the repository and write access to https://github.com/Cyberboss/common_core (TODO: Make the target repository here configurable). Despite it's name, it may be used across the entire test suite.
 - Secret `TGS_TEST_DISCORD_TOKEN`: See above note about test environment variables.
 - Secret `TGS_TEST_DISCORD_CHANNEL`: See above note about test environment variables.

.github/workflows/ci-suite.yml

@@ -19,6 +19,7 @@ env:
   TGS_DOTNET_VERSION: 6.0.x
   TGS_TEST_GITHUB_TOKEN: ${{ secrets.LIVE_TESTS_TOKEN }}
   TGS_RELEASE_NOTES_TOKEN: ${{ secrets.DEV_PUSH_TOKEN }}
+  CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
 concurrency:
   group: "ci-${{ github.head_ref || github.run_id }}-${{ github.event_name }}"