chore(deps): bump redux from 4.1.2 to 4.2.1

Bumps [redux](https://github.com/reduxjs/redux) from 4.1.2 to 4.2.1.
- [Release notes](https://github.com/reduxjs/redux/releases)
- [Changelog](https://github.com/reduxjs/redux/blob/master/CHANGELOG.md)
- [Commits](reduxjs/redux@v4.1.2...v4.2.1)

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

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

package.json

@@ -127,7 +127,7 @@
     "react-dom": "^16.14.0",
     "react-helmet": "^6.1.0",
     "react-redux": "^7.2.9",
-    "redux": "^4.1.2",
+    "redux": "^4.2.1",
     "redux-lifesaver": "^2.1.0",
     "regenerator-runtime": "^0.13.9",
     "reselect": "^4.1.8",