Bump ipython from 8.14.0 to 8.21.0

Bumps [ipython](https://github.com/ipython/ipython) from 8.14.0 to 8.21.0.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@8.14.0...8.21.0)

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

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

requirements/development.txt

@@ -4,6 +4,6 @@ ansible-lint==6.9.0
 coverage==7.2.7
 factory_boy==3.2.1
 flake8==6.0.0
-ipython==8.14.0
+ipython==8.21.0
 rstcheck==6.1.2
 sphinx==7.0.1