chore(deps-dev): bump @storybook/theming from 8.3.0 to 8.6.14

Bumps [@storybook/theming](https://github.com/storybookjs/storybook/tree/HEAD/code/lib/theming) from 8.3.0 to 8.6.14.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Commits](https://github.com/storybookjs/storybook/commits/v8.6.14/code/lib/theming)

---
updated-dependencies:
- dependency-name: "@storybook/theming"
  dependency-version: 8.6.14
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "@storybook/react": "^8.3.0",
     "@storybook/react-vite": "^8.3.0",
     "@storybook/test": "^8.3.0",
-    "@storybook/theming": "^8.0.8",
+    "@storybook/theming": "^8.6.14",
     "@testing-library/react": "^16.0.1",
     "@testing-library/webdriverio": "^3.2.1",
     "@types/du": "^1.0.3",