Update ipython requirement from >=8.10.0 to >=9.15.0

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@8.10.0...9.15.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-version: 9.15.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

dev-requirements.txt

@@ -7,4 +7,4 @@ pytest~=8.3.5
 pytest-cov~=6.1.1
 pygments>=2.7.4 # not directly required, pinned by Snyk to avoid a vulnerability
 setuptools>=70.0.0 # not directly required, pinned by Snyk to avoid a vulnerability
-ipython>=8.10.0 # not directly required, pinned by Snyk to avoid a vulnerability
+ipython>=9.15.0 # not directly required, pinned by Snyk to avoid a vulnerability