Bump react-redux from 7.2.4 to 7.2.8 in /ui

Bumps [react-redux](https://github.com/reduxjs/react-redux) from 7.2.4 to 7.2.8.
- [Release notes](https://github.com/reduxjs/react-redux/releases)
- [Changelog](https://github.com/reduxjs/react-redux/blob/master/CHANGELOG.md)
- [Commits](https://github.com/reduxjs/react-redux/compare/v7.2.4...v7.2.8)

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

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

ui/package.json

@@ -26,7 +26,7 @@
     "query-string": "7.0.1",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
-    "react-redux": "7.2.4",
+    "react-redux": "7.2.8",
     "react-router-dom": "5.3.0",
     "react-scripts": "4.0.3",
     "react-syntax-highlighter": "15.4.3",