pyproject.toml: drop ruff excludes redundant to gitignore, rather extend excludes

ruff's "exclude" documentation [1] reads:

  "Note that you'll typically want to use extend-exclude to modify the
  excluded paths."

Do that.

The default for the "respect-gitignore" setting [2] is "true", so we can
safely drop entries that are already specified there.

[1] https://docs.astral.sh/ruff/settings/#exclude
[2] https://docs.astral.sh/ruff/settings/#respect-gitignore

Signed-off-by: Bastian Krause <bst@pengutronix.de>

Author: Bastian-Krause

pyproject.toml

@@ -206,16 +206,11 @@ commands = pylint -f colorized labgrid
 
 [tool.ruff]
 line-length = 119
-exclude = [
-  "__pycache__",
-  "labgrid.egg-info",
+extend-exclude = [
   ".pybuild",
-  "build",
   "debian",
   "env",
-  "venv",
   "envs",
-  "dist",
   "labgrid/remote/generated",
 ]