Bump path-to-regexp, react-router and react-router-dom

Removes [path-to-regexp](https://github.com/pillarjs/path-to-regexp). It's no longer used after updating ancestor dependencies [path-to-regexp](https://github.com/pillarjs/path-to-regexp), [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) and [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom). These dependencies need to be updated together.


Removes `path-to-regexp`

Updates `react-router` from 5.3.4 to 6.26.2
- [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/[email protected]/packages/react-router)

Updates `react-router-dom` from 5.3.4 to 6.26.2
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router-dom/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/[email protected]/packages/react-router-dom)

---
updated-dependencies:
- dependency-name: path-to-regexp
  dependency-type: indirect
- dependency-name: react-router
  dependency-type: direct:production
- dependency-name: react-router-dom
  dependency-type: direct:production
...

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

package.json

@@ -33,8 +33,8 @@
     "react-leaflet-cluster": "^2.1.0",
     "react-markdown": "^9.0.1",
     "react-redux": "~7.2.3",
-    "react-router": "^5.3.4",
-    "react-router-dom": "^5.3.4",
+    "react-router": "^6.26.2",
+    "react-router-dom": "^6.26.2",
     "react-transition-group": "^4.4.1",
     "redux": "~4.0.5",
     "redux-devtools-extension": "~2.13.9",