build(deps): bump polished from 4.0.5 to 4.1.0 in /docs

Bumps [polished](https://github.com/styled-components/polished) from 4.0.5 to 4.1.0.
- [Release notes](https://github.com/styled-components/polished/releases)
- [Commits](styled-components/polished@v4.0.5...v4.1.0)

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

Author: dependabot[bot]

docs/package-lock.json

@@ -38,7 +38,7 @@
     "gatsby-transformer-remark": "^2.13.1",
     "gatsby-transformer-sharp": "^2.11.0",
     "gatsby-transformer-yaml": "^2.8.0",
-    "polished": "^4.0.5",
+    "polished": "^4.1.0",
     "prism-react-renderer": "^1.1.1",
     "prop-types": "^15.7.2",
     "puppeteer": "^7.0.1",