Bump react-router from 7.14.1 to 7.15.0

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.14.1 to 7.15.0.
- [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@7.15.0/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-version: 7.15.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package.json

@@ -23,7 +23,7 @@
     "react-ga": "^3.3.1",
     "react-joyride": "^2.9.3",
     "react-redux": "^9.2.0",
-    "react-router": "^7.14.1",
+    "react-router": "^7.15.0",
     "react-scripts": "5.0.1",
     "react-simple-code-editor": "^0.14.1",
     "react-simple-tree-menu": "^1.1.18",