Bump react-router from 7.6.3 to 7.12.0 in /content/src/Service.Host

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.6.3 to 7.12.0.
- [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@7.12.0/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-version: 7.12.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

content/src/Service.Host/package-lock.json

@@ -54,7 +54,7 @@
         "react": "19.1.0",
         "react-dom": "19.1.0",
         "react-oidc-context": "3.3.0",
-        "react-router": "7.6.3",
+        "react-router": "7.12.0",
         "react-router-dom": "7.6.3",
         "typeface-roboto": "1.1.13"
     }