build(deps): bump polished from 4.1.4 to 4.2.2 in /docs (#2810)

Author: dependabot[bot]

docs/package-lock.json

@@ -36,7 +36,7 @@
     "gatsby-transformer-remark": "^5.13.0",
     "gatsby-transformer-sharp": "^4.13.0",
     "gatsby-transformer-yaml": "^4.13.0",
-    "polished": "^4.1.4",
+    "polished": "^4.2.2",
     "postcss": "^8.4.12",
     "prism-react-renderer": "^1.3.1",
     "prop-types": "^15.8.1",