build(deps): bump CodSpeedHQ/action from 5.0.3 to 5.2.1

Bumps [CodSpeedHQ/action](https://github.com/codspeedhq/action) from 5.0.3 to 5.2.1.
- [Release notes](https://github.com/codspeedhq/action/releases)
- [Changelog](https://github.com/CodSpeedHQ/action/blob/main/CHANGELOG.md)
- [Commits](CodSpeedHQ/action@v5.0.3...v5.2.1)

---
updated-dependencies:
- dependency-name: CodSpeedHQ/action
  dependency-version: 5.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/codspeed.yml

@@ -29,7 +29,7 @@ jobs:
       - run: cargo codspeed build
         working-directory: ./css-inline
 
-      - uses: CodSpeedHQ/action@v5.0.3
+      - uses: CodSpeedHQ/action@v5.2.1
         with:
           run: cargo codspeed run
           mode: "instrumentation"