build(deps): bump the npm-production-dependencies group across 1 directory with 3 updates

Bumps the npm-production-dependencies group with 3 updates in the /src/flagd-ui directory: [@tailwindcss/postcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-postcss), [@vercel/otel](https://github.com/vercel/otel) and [next](https://github.com/vercel/next.js).


Updates `@tailwindcss/postcss` from 4.0.9 to 4.0.12
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.0.12/packages/@tailwindcss-postcss)

Updates `@vercel/otel` from 1.10.1 to 1.10.2
- [Release notes](https://github.com/vercel/otel/releases)
- [Commits](https://github.com/vercel/otel/compare/@vercel/otel@1.10.1...@vercel/otel@1.10.2)

Updates `next` from 15.2.0 to 15.2.1
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.2.0...v15.2.1)

---
updated-dependencies:
- dependency-name: "@tailwindcss/postcss"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm-production-dependencies
- dependency-name: "@vercel/otel"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm-production-dependencies
- dependency-name: next
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm-production-dependencies
...

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Author: dependabot[bot]