Bump react-router from 6.10.0 to 6.22.0 in /spiffworkflow-frontend (#946

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Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 6.10.0 to 6.22.0.
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/react-router@6.22.0/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  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>

spiffworkflow-frontend/package.json

@@ -50,7 +50,7 @@
     "react-error-boundary": "^4.0.11",
     "react-icons": "^4.4.0",
     "react-jsonschema-form": "^1.8.1",
-    "react-router": "^6.3.0",
+    "react-router": "^6.22.0",
     "react-router-dom": "6.3.0",
     "react-scripts": "^5.0.1",
     "serve": "^14.0.0",