Bump ipython in /{{cookiecutter.project_slug}}/backend (#184)

Bumps [ipython](https://github.com/ipython/ipython) from 7.18.1 to 7.31.1.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.18.1...7.31.1)

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

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

Author: dependabot[bot]

{{cookiecutter.project_slug}}/backend/requirements.txt

@@ -4,7 +4,7 @@ fastapi==0.65.2
 celery==5.0.0
 redis==3.5.3
 httpx==0.15.5
-ipython==7.18.1
+ipython==7.31.1
 itsdangerous==1.1.0
 Jinja2==2.11.3
 psycopg2==2.8.6