Build: Bump ipykernel from 7.2.0 to 7.3.0

Bumps [ipykernel](https://github.com/ipython/ipykernel) from 7.2.0 to 7.3.0.
- [Release notes](https://github.com/ipython/ipykernel/releases)
- [Changelog](https://github.com/ipython/ipykernel/blob/main/CHANGELOG.md)
- [Commits](ipython/ipykernel@v7.2.0...v7.3.0)

---
updated-dependencies:
- dependency-name: ipykernel
  dependency-version: 7.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]