Enforce ruff/flake8-2020 rule (YTT301)

YTT301 `sys.version[0]` referenced (python10), use `sys.version_info`

The Python documentation discourages the use of `sys.version`:
	Do not extract version information out of it, rather,
	use `version_info` and [...]

Author: DimitriPapadopoulos

distutils/sysconfig.py

@@ -236,7 +236,7 @@ def get_python_lib(plat_specific=False, standard_lib=False, prefix=None):
         if prefix is None:
             prefix = PREFIX
         if standard_lib:
-            return os.path.join(prefix, "lib-python", sys.version[0])
+            return os.path.join(prefix, "lib-python", sys.version_info.major)
         return os.path.join(prefix, 'site-packages')
 
     early_prefix = prefix

ruff.toml

@@ -9,6 +9,7 @@ extend-select = [
 	"RUF010",
 	"RUF100",
 	"UP",
+	"YTT",
 ]
 ignore = [
 	# https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules