Update fakeredis requirement from ==2.30.* to ==2.31.* (#5370)

Updates the requirements on [fakeredis](https://github.com/cunla/fakeredis-py) to permit the latest version.
- [Release notes](https://github.com/cunla/fakeredis-py/releases)
- [Commits](https://github.com/cunla/fakeredis-py/compare/v2.30.0...v2.31.0)

---
updated-dependencies:
- dependency-name: fakeredis
  dependency-version: 2.31.0
  dependency-type: direct:production
...

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pyproject.toml

@@ -110,7 +110,7 @@ dev = [
   "aiohttp==3.12.*",
   "coverage",
   "coveralls",
-  "fakeredis==2.30.*",
+  "fakeredis==2.31.*",
   "flake8==7.3.*",
   "freezegun",
   "isort==6.0.*",