Bump @vitest/eslint-plugin from 1.1.20 to 1.1.21

Bumps [@vitest/eslint-plugin](https://github.com/vitest-dev/eslint-plugin-vitest) from 1.1.20 to 1.1.21.
- [Release notes](https://github.com/vitest-dev/eslint-plugin-vitest/releases)
- [Commits](vitest-dev/eslint-plugin-vitest@v1.1.20...v1.1.21)

---
updated-dependencies:
- dependency-name: "@vitest/eslint-plugin"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>