Bump undici and @actions/http-client

Bumps [undici](https://github.com/nodejs/undici) and [@actions/http-client](https://github.com/actions/toolkit/tree/HEAD/packages/http-client). These dependencies needed to be updated together.

Updates `undici` from 5.29.0 to 6.23.0
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.29.0...v6.23.0)

Updates `@actions/http-client` from 3.0.1 to 3.0.2
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/http-client/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/http-client)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.23.0
  dependency-type: indirect
- dependency-name: "@actions/http-client"
  dependency-version: 3.0.2
  dependency-type: indirect
...

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Author: dependabot[bot]