Bump flake8 from 6.1.0 to 7.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 6.1.0 to 7.0.0.
- [Commits](PyCQA/flake8@6.1.0...7.0.0)

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

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

Author: dependabot[bot]

poetry.lock

@@ -42,7 +42,7 @@ pycryptodome = "^3.18.0"
 
 [tool.poetry.group.dev.dependencies]
 black = {version = "^23.7", python = "^3.9"}
-flake8 = {version = "^6.0.0", python = "^3.9"}
+flake8 = {version = ">=6,<8", python = "^3.9"}
 ipython = {version = "^8.14.0", python = "^3.9"}
 mypy = "^1.5.0"
 pytest = "^7.4.0"