Bump ipython from 7.23.1 to 7.31.1 in /requirements

Bumps [ipython](https://github.com/ipython/ipython) from 7.23.1 to 7.31.1.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.23.1...7.31.1)

---
updated-dependencies:
- dependency-name: ipython
  dependency-type: indirect
...

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