build(deps): bump polished from 4.1.3 to 4.1.4 in /docs (#2548)

Bumps [polished](https://github.com/styled-components/polished) from 4.1.3 to 4.1.4.
- [Release notes](https://github.com/styled-components/polished/releases)
- [Commits](styled-components/polished@v4.1.3...v4.1.4)

---
updated-dependencies:
- dependency-name: polished
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/package.json

@@ -37,7 +37,7 @@
     "gatsby-transformer-remark": "^2.16.1",
     "gatsby-transformer-sharp": "^2.12.1",
     "gatsby-transformer-yaml": "^2.11.0",
-    "polished": "^4.1.3",
+    "polished": "^4.1.4",
     "prism-react-renderer": "^1.2.1",
     "prop-types": "^15.8.1",
     "puppeteer": "^13.0.1",