build(deps-dev): bump postcss-rtlcss in /generators/react/resources

Bumps [postcss-rtlcss](https://github.com/elchininet/postcss-rtlcss) from 5.1.0 to 5.1.1.
- [Release notes](https://github.com/elchininet/postcss-rtlcss/releases)
- [Changelog](https://github.com/elchininet/postcss-rtlcss/blob/master/CHANGELOG.md)
- [Commits](elchininet/postcss-rtlcss@v5.1.0...v5.1.1)

---
updated-dependencies:
- dependency-name: postcss-rtlcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

generators/react/resources/package.json

@@ -65,7 +65,7 @@
     "merge-jsons-webpack-plugin": "2.0.1",
     "mini-css-extract-plugin": "2.8.1",
     "postcss-loader": "8.1.1",
-    "postcss-rtlcss": "5.1.0",
+    "postcss-rtlcss": "5.1.1",
     "react-infinite-scroll-component": "6.1.0",
     "redux-mock-store": "1.5.4",
     "rimraf": "5.0.5",