chore(deps): update all storybook dependencies to ^9.1.15

Author: renovate[bot]

frontend/package.json

@@ -208,9 +208,9 @@
     "@codecov/vite-plugin": "^1.9.1",
     "@csstools/postcss-light-dark-function": "^2.0.10",
     "@playwright/test": "^1.56.1",
-    "@storybook/addon-docs": "^9.1.14",
-    "@storybook/addon-links": "^9.1.14",
-    "@storybook/react-vite": "^9.1.14",
+    "@storybook/addon-docs": "^9.1.15",
+    "@storybook/addon-links": "^9.1.15",
+    "@storybook/react-vite": "^9.1.15",
     "@swc-jotai/react-refresh": "^0.3.0",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.0",
@@ -245,7 +245,7 @@
     "react": "^19.1.1",
     "react-compiler-runtime": "19.1.0-rc.3",
     "react-dom": "^19.1.1",
-    "storybook": "^9.1.14",
+    "storybook": "^9.1.15",
     "stylelint": "^16.23.1",
     "stylelint-config-standard": "^36.0.1",
     "tailwindcss": "^4.1.15",