build(deps): bump @contentful/rich-text-react-renderer

Bumps [@contentful/rich-text-react-renderer](https://github.com/contentful/rich-text) from 15.19.4 to 15.21.1.
- [Release notes](https://github.com/contentful/rich-text/releases)
- [Changelog](https://github.com/contentful/rich-text/blob/master/CHANGELOG.md)
- [Commits](https://github.com/contentful/rich-text/compare/@contentful/rich-text-react-renderer@15.19.4...@contentful/rich-text-react-renderer@15.21.1)

---
updated-dependencies:
- dependency-name: "@contentful/rich-text-react-renderer"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -24,7 +24,7 @@
   "dependencies": {
     "@apollo/client": "^3.9.5",
     "@contentful/rich-text-from-markdown": "^15.16.13",
-    "@contentful/rich-text-react-renderer": "^15.19.4",
+    "@contentful/rich-text-react-renderer": "^15.21.1",
     "@remix-run/node": "^1.19.1",
     "@remix-run/react": "^1.19.1",
     "@remix-run/serve": "^1.18.1",