chore(deps-dev): bump flake8-black from 0.2.1 to 0.2.3

Bumps [flake8-black](https://github.com/peterjc/flake8-black) from 0.2.1 to 0.2.3.
- [Release notes](https://github.com/peterjc/flake8-black/releases)
- [Commits](https://github.com/peterjc/flake8-black/commits)

---
updated-dependencies:
- dependency-name: flake8-black
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

poetry.lock

@@ -32,7 +32,7 @@ coverage = {extras = ["toml"], version = "^5.5"}
 pytest = "^6.2.2"
 black = "^20.8b1"
 flake8 = "^3.9.0"
-flake8-black = "^0.2.1"
+flake8-black = "^0.2.3"
 flake8-builtins = "^1.5.3"
 flake8-comprehensions = "^3.4.0"
 flake8-debugger = "^4.0.0"