Bump ra-language-french from 4.2.0 to 4.9.3 (#359)

Bumps [ra-language-french](https://github.com/marmelab/react-admin) from 4.2.0 to 4.9.3.
- [Release notes](https://github.com/marmelab/react-admin/releases)
- [Changelog](https://github.com/marmelab/react-admin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/marmelab/react-admin/compare/v4.2.0...v4.9.3)

---
updated-dependencies:
- dependency-name: ra-language-french
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -29,7 +29,7 @@
     "papaparse": "^5.2.0",
     "prop-types": "^15.7.2",
     "ra-language-chinese": "^2.0.10",
-    "ra-language-french": "^4.2.0",
+    "ra-language-french": "^4.9.3",
     "ra-language-german": "^3.13.4",
     "react": "^17.0.0",
     "react-admin": "^3.19.7",