Bump @solidjs/router from 0.12.5 to 0.15.3 in /client

Bumps [@solidjs/router](https://github.com/solidjs/solid-router) from 0.12.5 to 0.15.3.
- [Changelog](https://github.com/solidjs/solid-router/blob/main/CHANGELOG.md)
- [Commits](https://github.com/solidjs/solid-router/commits)

---
updated-dependencies:
- dependency-name: "@solidjs/router"
  dependency-version: 0.15.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

client/package.json

@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@neutralinojs/lib": "^6.0.0",
-    "@solidjs/router": "^0.12.5",
+    "@solidjs/router": "^0.15.3",
     "@tailwindcss/vite": "^4.0.3",
     "autoprefixer": "^10.4.20",
     "concurrently": "^9.1.2",