Bump @netlify/ipx and @netlify/plugin-nextjs

Bumps [@netlify/ipx](https://github.com/netlify/netlify-ipx) to 1.2.5 and updates ancestor dependency [@netlify/plugin-nextjs](https://github.com/netlify/next-runtime). These dependencies need to be updated together.


Updates `@netlify/ipx` from 0.0.7 to 1.2.5
- [Release notes](https://github.com/netlify/netlify-ipx/releases)
- [Changelog](https://github.com/netlify/netlify-ipx/blob/main/CHANGELOG.md)
- [Commits](netlify/netlify-ipx@v0.0.7...v1.2.5)

Updates `@netlify/plugin-nextjs` from 4.0.0-beta.4 to 4.23.1
- [Release notes](https://github.com/netlify/next-runtime/releases)
- [Changelog](https://github.com/netlify/next-runtime/blob/main/CHANGELOG.md)
- [Commits](opennextjs/opennextjs-netlify@v4.0.0-beta.4...plugin-nextjs-v4.23.1)

---
updated-dependencies:
- dependency-name: "@netlify/ipx"
  dependency-type: indirect
- dependency-name: "@netlify/plugin-nextjs"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]