Bump polished from 4.2.2 to 4.3.1

Bumps [polished](https://github.com/styled-components/polished) from 4.2.2 to 4.3.1.
- [Release notes](https://github.com/styled-components/polished/releases)
- [Commits](styled-components/polished@v4.2.2...v4.3.1)

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

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

package.json

@@ -20,7 +20,7 @@
     "moment": "~2.29.0",
     "panoptes-client": "~5.6.0",
     "papaparse": "^5.4.1",
-    "polished": "~4.2.2",
+    "polished": "~4.3.1",
     "prop-types": "~15.8.1",
     "qs": "~6.11.2",
     "rc-slider": "~8.6.5",