chore(deps-dev): bump autopep8 in /backend in the python group

Bumps the python group in /backend with 1 update: [autopep8](https://github.com/hhatto/autopep8).


Updates `autopep8` from 2.3.0 to 2.3.1
- [Release notes](https://github.com/hhatto/autopep8/releases)
- [Commits](hhatto/autopep8@v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: autopep8
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python
...

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

backend/dev-requirements.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile dev-requirements.in
 #
-autopep8==2.3.0
+autopep8==2.3.1
     # via -r dev-requirements.in
 build==1.0.3
     # via pip-tools