build(deps): bump keras from 2.14.0 to 3.0.0

Bumps [keras](https://github.com/keras-team/keras) from 2.14.0 to 3.0.0.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v2.14.0...v3.0.0)

---
updated-dependencies:
- dependency-name: keras
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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