Bump undici, @actions/http-client and @actions/github

Bumps [undici](https://github.com/nodejs/undici) to 6.23.0 and updates ancestor dependencies [undici](https://github.com/nodejs/undici), [@actions/http-client](https://github.com/actions/toolkit/tree/HEAD/packages/http-client) and [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github). These dependencies need 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)

Updates `@actions/github` from 7.0.0 to 9.0.0
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/github/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/github)

---
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
- dependency-name: "@actions/github"
  dependency-version: 9.0.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -34,7 +34,7 @@
     },
     "dependencies": {
         "@actions/core": "^2.0.2",
-        "@actions/github": "^7.0.0",
+        "@actions/github": "^9.0.0",
         "deepmerge-ts": "^7.1.5",
         "js-yaml": "^4.1.1"
     },