Bump chromatic from 6.17.3 to 6.21.0

Bumps [chromatic](https://github.com/chromaui/chromatic-cli) from 6.17.3 to 6.21.0.
- [Changelog](https://github.com/chromaui/chromatic-cli/blob/main/CHANGELOG.md)
- [Commits](chromaui/chromatic-cli@v6.17.3...v6.21.0)

---
updated-dependencies:
- dependency-name: chromatic
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -142,7 +142,7 @@
     "@typescript-eslint/parser": "^5.59.1",
     "babel-loader": "^9.1.2",
     "chai": "^4.3.7",
-    "chromatic": "^6.17.3",
+    "chromatic": "^6.21.0",
     "cli-progress": "^3.12.0",
     "css-loader": "^6.7.3",
     "cypress": "^11.2.0",