chore(deps): bump undici, jsonld, @rdfjs/serializer-jsonld-ext and release-it

Bumps [undici](https://github.com/nodejs/undici) to 6.25.0 and updates ancestor dependencies [undici](https://github.com/nodejs/undici), [jsonld](https://github.com/digitalbazaar/jsonld.js), [@rdfjs/serializer-jsonld-ext](https://github.com/rdfjs-base/serializer-jsonld-ext) and [release-it](https://github.com/release-it/release-it). These dependencies need to be updated together.


Updates `undici` from 6.21.1 to 6.25.0
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.21.1...v6.25.0)

Updates `jsonld` from 8.3.3 to 9.0.0
- [Changelog](https://github.com/digitalbazaar/jsonld.js/blob/main/CHANGELOG.md)
- [Commits](digitalbazaar/jsonld.js@v8.3.3...v9.0.0)

Updates `@rdfjs/serializer-jsonld-ext` from 4.0.0 to 4.0.2
- [Commits](rdfjs-base/serializer-jsonld-ext@v4.0.0...v4.0.2)

Updates `release-it` from 18.1.2 to 20.0.0
- [Release notes](https://github.com/release-it/release-it/releases)
- [Changelog](https://github.com/release-it/release-it/blob/main/CHANGELOG.md)
- [Commits](release-it/release-it@18.1.2...20.0.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.25.0
  dependency-type: indirect
- dependency-name: jsonld
  dependency-version: 9.0.0
  dependency-type: direct:production
- dependency-name: "@rdfjs/serializer-jsonld-ext"
  dependency-version: 4.0.2
  dependency-type: indirect
- dependency-name: release-it
  dependency-version: 20.0.0
  dependency-type: direct:development
...

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Author: dependabot[bot]