fix(ci): set CODECOV_TOKEN after action upgrade

[coopernetes]

Fixes #441

• codecov-action@v4 requires the token to be set
• flags are not necessary at this time. its used to differentiate test types and/or sub-components in a monorepo. For now, we just want to see all test coverage across the whole project.

[netlify]

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[coopernetes]

@JamieSlome before we merge, let me try modifying our "skip on empty coverage step", validating that Codecov gets the full report then I'll revert the change.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (fc86cf4) 73.58% compared to head (18c12f0) 56.85%.
Report is 9 commits behind head on main.

Files	Patch %	Lines
src/proxy/routes/index.js	87.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #442       +/-   ##
===========================================
- Coverage   73.58%   56.85%   -16.74%     
===========================================
  Files           1       39       +38     
  Lines          53     1036      +983     
===========================================
+ Hits           39      589      +550     
- Misses         14      447      +433     

Flag	Coverage Δ
unittests	?

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[coopernetes]

nyc.config.js wasn't working as intended. I'm going to permanently remove this logic since it just produces the following error:

https://github.com/finos/git-proxy/pull/442/files#diff-9f5e2e8ee9ae83e176cbe50f37f106679cb18f4b5c3c19163fdea8854454e477L16-L38

Generating coverage report for changed files...
fatal: ambiguous argument 'origin/': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
Error:  Error: Command failed: git rev-parse origin/
fatal: ambiguous argument 'origin/': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

@JamieSlome codecov handles the difference in changed files already and I think some of the numbers coming back from the tool are misreported because we were monkeying around with the files to include into nyc's report generation. If we run with the full report and use codecov instead to report the differences in changed files, I do not believe we need our own logic to do this.

The token change is sound and confirmed in the workflow that reports are being posted again. I'll need to merge this into main to generate a baseline, then rebase on my other branch on #415 to get accurate coverage differences.

[JamieSlome]

LGTM! 🍰