Update pyproject.toml

Signed-off-by: Jan Kowalleck <jan.kowalleck@gmail.com>

Author: jkowalleck

pyproject.toml

@@ -83,7 +83,7 @@ xml-validation = ["lxml"]
 [tool.poetry.group.dev.dependencies]
 ddt = "1.7.2"
 coverage = "7.8.0"
-flake8 = { version="7.2.0", python=">=3.9.1" }
+flake8 = "7.2.0"
 flake8-annotations = "3.1.1"
 flake8-bugbear = "24.12.12"
 flake8-copyright-validator = "0.0.1"