Update ipython requirement from ~=8.15.0 to ~=8.16.0

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@8.15.0...8.16.0)

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

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

requirements.txt

@@ -53,7 +53,7 @@ importlib-resources~=5.13.0
 incremental~=22.10.0
 iniconfig~=2.0.0
 ipykernel~=6.25.0
-ipython~=8.15.0
+ipython~=8.16.0
 ipython-genutils==0.2.0
 ipywidgets~=8.1.0
 jedi~=0.19.0