Bump pinia from 2.2.7 to 2.2.8 in /frontend/aashub (#174)

Bumps [pinia](https://github.com/vuejs/pinia) from 2.2.7 to 2.2.8.
- [Release notes](https://github.com/vuejs/pinia/releases)
- [Commits](vuejs/pinia@v2.2.7...v2.2.8)

---
updated-dependencies:
- dependency-name: pinia
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/aashub/package.json

@@ -28,7 +28,7 @@
         "eslint-plugin-simple-import-sort": "^12.1.1",
         "eslint-plugin-vue": "^9.31.0",
         "globals": "^15.12.0",
-        "pinia": "^2.2.7",
+        "pinia": "^2.2.8",
         "prettier": "^3.4.1",
         "sass": "1.81.0",
         "typescript": "^5.6.3",

frontend/aashub/yarn.lock

@@ -1467,10 +1467,10 @@ picomatch@^4.0.2:
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-4.0.2.tgz#77c742931e8f3b8820946c76cd0c1f13730d1dab"
   integrity sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==
 
-pinia@^2.2.7:
-  version "2.2.7"
-  resolved "https://registry.yarnpkg.com/pinia/-/pinia-2.2.7.tgz#692ecbc259f92409b245b2dcc2564284e040b334"
-  integrity sha512-M+X9Eh9V5De+8wyj0rD1cgB0zy1mPN/aBEpCI9y+DgVmzXV2dIwjYBluJ5cMQd/jAoHs0VW+EyUSHMZv/Wtcnw==
+pinia@^2.2.8:
+  version "2.2.8"
+  resolved "https://registry.yarnpkg.com/pinia/-/pinia-2.2.8.tgz#78bccede31f39e0119188fdaf705c31a93da6d5f"
+  integrity sha512-NRTYy2g+kju5tBRe0oNlriZIbMNvma8ZJrpHsp3qudyiMEA8jMmPPKQ2QMHg0Oc4BkUyQYWagACabrwriCK9HQ==
   dependencies:
     "@vue/devtools-api" "^6.6.3"
     vue-demi "^0.14.10"