build(deps-dev): bump fakeredis from 2.20.1 to 2.21.0

Bumps [fakeredis](https://github.com/cunla/fakeredis-py) from 2.20.1 to 2.21.0.
- [Release notes](https://github.com/cunla/fakeredis-py/releases)
- [Commits](cunla/fakeredis-py@v2.20.1...v2.21.0)

---
updated-dependencies:
- dependency-name: fakeredis
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pyproject.toml

@@ -21,7 +21,7 @@ podman = "^4.4.1"
 [tool.poetry.dev-dependencies]
 pytest = "^8.0.0"
 pytest-httpserver = "^1.0.6"
-fakeredis = "^2.20.1"
+fakeredis = "^2.21.0"
 flake8 = "^5.0.4"
 black = "^24.1.1"
 coverage = "^7.4.1"