build(deps): Bump react-router from 7.13.1 to 7.15.1 in /client

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.13.1 to 7.15.1.
- [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@7.15.1/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-version: 7.15.1
  dependency-type: direct:production
...

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

client/package-lock.json

@@ -71,7 +71,7 @@
         "react-mentions": "^4.4.10",
         "react-photoswipe-gallery": "^4.0.0",
         "react-redux": "^9.2.0",
-        "react-router": "^7.13.1",
+        "react-router": "^7.15.1",
         "react-textarea-autosize": "^8.5.9",
         "react-time-ago": "^7.4.4",
         "redux": "^5.0.1",
@@ -14571,9 +14571,9 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.13.1",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.13.1.tgz",
-      "integrity": "sha512-td+xP4X2/6BJvZoX6xw++A2DdEi++YypA69bJUV5oVvqf6/9/9nNlD70YO1e9d3MyamJEBQFEzk6mbfDYbqrSA==",
+      "version": "7.15.1",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.15.1.tgz",
+      "integrity": "sha512-R8rl9HhgikFYoPJymnUtPXWbnDb3oget6lQnfIoupbt61aT9aOhRkDsY2XRhZRyX1Z/8a5sL74fXmFNm3NRK5A==",
       "license": "MIT",
       "dependencies": {
         "cookie": "^1.0.1",

client/package.json

@@ -148,7 +148,7 @@
     "react-mentions": "^4.4.10",
     "react-photoswipe-gallery": "^4.0.0",
     "react-redux": "^9.2.0",
-    "react-router": "^7.13.1",
+    "react-router": "^7.15.1",
     "react-textarea-autosize": "^8.5.9",
     "react-time-ago": "^7.4.4",
     "redux": "^5.0.1",