chore(deps): update ipython requirement in /store/backend (#1185)

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@8.18.0...9.6.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-version: 9.6.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

store/backend/pyproject.toml

@@ -21,7 +21,7 @@ dependencies = [
     "flask-migrate~=4.1",
     "flask-sqlalchemy~=3.1", # fix multiple instance error: https://flask-sqlalchemy.palletsprojects.com/en/3.0.x/changes/#version-3-0-3
     "gunicorn~=23.0",
-    "ipython~=8.18",
+    "ipython~=9.6",
     "marshmallow~=4.0",
     "numpy<3.0.0",
     "pandas~=2.3",