build(deps): bump ipykernel from 6.29.3 to 6.29.4

Bumps [ipykernel](https://github.com/ipython/ipykernel) from 6.29.3 to 6.29.4.
- [Release notes](https://github.com/ipython/ipykernel/releases)
- [Changelog](https://github.com/ipython/ipykernel/blob/v6.29.4/CHANGELOG.md)
- [Commits](ipython/ipykernel@v6.29.3...v6.29.4)

---
updated-dependencies:
- dependency-name: ipykernel
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,4 +1,4 @@
-ipykernel==6.29.3
+ipykernel==6.29.4
 jupyter_client==8.6.0
 pytest==7.4.2
 python-dotenv==1.0.0