ci: swap deprecated xvfb Action

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.33333% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 81.29%. Comparing base (a88e3a9) to head (8855a26).

Files	Patch %	Lines
src/lint/provider.ts	83.33%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1069 +/- ## ========================================== - Coverage 83.48% 81.29% -2.20% ========================================== Files 12 12 Lines 2319 2325 +6 Branches 207 196 -11 ========================================== - Hits 1936 1890 -46 - Misses 378 430 +52 Partials 5 5 ```

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