Update autoflake requirement from ~=2.2.1 to ~=2.3.1

Updates the requirements on [autoflake](https://github.com/PyCQA/autoflake) to permit the latest version.
- [Release notes](https://github.com/PyCQA/autoflake/releases)
- [Commits](PyCQA/autoflake@v2.2.1...v2.3.1)

---
updated-dependencies:
- dependency-name: autoflake
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.dev.txt

@@ -1,5 +1,5 @@
 anyio>=3.7.1
-autoflake~=2.2.1
+autoflake~=2.3.1
 black~=23.12.1
 isort~=5.13.2
 pytest~=7.4.0