Bump storybook from 8.6.14 to 8.6.15 in /ui

Bumps [storybook](https://github.com/storybookjs/storybook/tree/HEAD/code/core) from 8.6.14 to 8.6.15.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v8.6.15/code/core)

---
updated-dependencies:
- dependency-name: storybook
  dependency-version: 8.6.15
  dependency-type: direct:development
...

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

Author: dependabot[bot]

ui/package.json

@@ -65,7 +65,7 @@
     "prettier": "^2.4.1",
     "sass": "1.26.5",
     "sass-loader": "^10.4.1",
-    "storybook": "8.6.14",
+    "storybook": "8.6.15",
     "vue-loader": "^16.4.1",
     "webpack-plugin-vuetify": "^3.0.3"
   },

ui/yarn.lock

@@ -2235,12 +2235,12 @@
   dependencies:
     ts-dedent "^2.0.0"
 
-"@storybook/core@8.6.14":
-  version "8.6.14"
-  resolved "https://registry.yarnpkg.com/@storybook/core/-/core-8.6.14.tgz#335b067709fd649512b6553b31ad48c8c56f7ed9"
-  integrity sha512-1P/w4FSNRqP8j3JQBOi3yGt8PVOgSRbP66Ok520T78eJBeqx9ukCfl912PQZ7SPbW3TIunBwLXMZOjZwBB/JmA==
+"@storybook/core@8.6.15":
+  version "8.6.15"
+  resolved "https://registry.yarnpkg.com/@storybook/core/-/core-8.6.15.tgz#ba3aa59b02981136fa671d545b64d380c1188c8b"
+  integrity sha512-VFpKcphNurJpSC4fpUfKL3GTXVoL53oytghGR30QIw5jKWwaT50HVbTyb41BLOUuZjmMhUQA8weiQEew6RX0gw==
   dependencies:
-    "@storybook/theming" "8.6.14"
+    "@storybook/theming" "8.6.15"
     better-opn "^3.0.2"
     browser-assert "^1.2.1"
     esbuild "^0.18.0 || ^0.19.0 || ^0.20.0 || ^0.21.0 || ^0.22.0 || ^0.23.0 || ^0.24.0 || ^0.25.0"
@@ -2301,6 +2301,11 @@
   resolved "https://registry.yarnpkg.com/@storybook/theming/-/theming-8.6.14.tgz#78c6dc878f705de70c67f2b2d08b8313b985d81a"
   integrity sha512-r4y+LsiB37V5hzpQo+BM10PaCsp7YlZ0YcZzQP1OCkPlYXmUAFy2VvDKaFRpD8IeNPKug2u4iFm/laDEbs03dg==
 
+"@storybook/theming@8.6.15":
+  version "8.6.15"
+  resolved "https://registry.yarnpkg.com/@storybook/theming/-/theming-8.6.15.tgz#781e6b36f113a10e76379956b9451276e8d5bda2"
+  integrity sha512-dAbL0XOekyT6XsF49R6Etj3WxQ/LpdJDIswUUeHgVJ6/yd2opZOGbPxnwA3zlmAh1c0tvpPyhSDXxSG79u8e4Q==
+
 "@storybook/vue3-webpack5@8.6.14":
   version "8.6.14"
   resolved "https://registry.yarnpkg.com/@storybook/vue3-webpack5/-/vue3-webpack5-8.6.14.tgz#ed64e1d4bda975cc92803872bdde609a741fa8eb"
@@ -10663,12 +10668,12 @@ stop-iteration-iterator@^1.0.0:
     es-errors "^1.3.0"
     internal-slot "^1.1.0"
 
-storybook@8.6.14:
-  version "8.6.14"
-  resolved "https://registry.yarnpkg.com/storybook/-/storybook-8.6.14.tgz#d205e73b6427eebf321bcfbe63bfbec3ade4d9db"
-  integrity sha512-sVKbCj/OTx67jhmauhxc2dcr1P+yOgz/x3h0krwjyMgdc5Oubvxyg4NYDZmzAw+ym36g/lzH8N0Ccp4dwtdfxw==
+storybook@8.6.15:
+  version "8.6.15"
+  resolved "https://registry.yarnpkg.com/storybook/-/storybook-8.6.15.tgz#eb4a3bae1ac0fe875bb322a412fac9709d9b5124"
+  integrity sha512-Ob7DMlwWx8s7dMvcQ3xPc02TvUeralb+xX3oaPRk9wY9Hc6M1IBC/7cEoITkSmRS2v38DHubC+mtEKNc1u2gQg==
   dependencies:
-    "@storybook/core" "8.6.14"
+    "@storybook/core" "8.6.15"
 
 string-length@^4.0.1, string-length@^4.0.2:
   version "4.0.2"