build(deps-dev): update ipython requirement from ~=8.6 to ~=8.8

Updates the requirements on [ipython](/~https://github.com/ipython/ipython) to permit the latest version.
- [Release notes](/~https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@8.6.0...8.8.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-type: direct:development
...

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

requirements-dev.txt

@@ -1,7 +1,7 @@
 black~=22.12
 coverage[toml]~=6.5
 flake8~=6.0
-ipython~=8.6
+ipython~=8.8
 mypy~=0.991
 pg8000~=1.29
 pipdeptree~=2.3