build(deps): bump polished from 4.0.3 to 4.0.5 in /docs (#1602)

Author: dependabot[bot]

docs/package-lock.json

@@ -38,7 +38,7 @@
     "gatsby-transformer-remark": "^2.8.28",
     "gatsby-transformer-sharp": "^2.9.0",
     "gatsby-transformer-yaml": "^2.4.11",
-    "polished": "^4.0.3",
+    "polished": "^4.0.5",
     "prism-react-renderer": "^1.1.1",
     "prop-types": "^15.7.2",
     "puppeteer": "^5.4.1",