Bump react-router from 7.1.1 to 7.1.2 in /gui

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.1.1 to 7.1.2.
- [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)

---
updated-dependencies:
- dependency-name: react-router
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gui/package.json

@@ -12,7 +12,7 @@
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-piano": "^3.1.3",
-    "react-router": "^7.1.1"
+    "react-router": "^7.1.2"
   },
   "devDependencies": {
     "@types/react-dom": "^19.0.1",

gui/yarn.lock

@@ -691,10 +691,10 @@ react-refresh@^0.14.2:
   resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.14.2.tgz#3833da01ce32da470f1f936b9d477da5c7028bf9"
   integrity sha512-jCvmsr+1IUSMUyzOkRcvnVbX3ZYC6g9TDrDbFuFmRDq7PD4yaGbLKNQL6k2jnArV8hjYxh7hVhAZB6s9HDGpZA==
 
-react-router@^7.1.1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/react-router/-/react-router-7.1.1.tgz#88f5657fa5b8f0b918c7222ec710de0274d00b2e"
-  integrity sha512-39sXJkftkKWRZ2oJtHhCxmoCrBCULr/HAH4IT5DHlgu/Q0FCPV0S4Lx+abjDTx/74xoZzNYDYbOZWlJjruyuDQ==
+react-router@^7.1.2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/react-router/-/react-router-7.1.2.tgz#61bf043b7fc839f2cfc80e64ed7ca9072526bfd2"
+  integrity sha512-KeallSO30KLpIe/ZZqfk6pCJ1c+5JhMxl3SCS3Zx1LgaGuQbgLDmjuNi6KZ5LnAV9sWjbmBWGRw8Um/Pw6BExg==
   dependencies:
     "@types/cookie" "^0.6.0"
     cookie "^1.0.1"