Bump @storybook/nextjs from 8.6.12 to 10.2.8

Bumps [@storybook/nextjs](https://github.com/storybookjs/storybook/tree/HEAD/code/frameworks/nextjs) from 8.6.12 to 10.2.8.
- [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/v10.2.8/code/frameworks/nextjs)

---
updated-dependencies:
- dependency-name: "@storybook/nextjs"
  dependency-version: 10.2.8
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]