use pathlib.Path instead of os.path.isfile · gitpython-developers/GitPython@7187984

Original file line number	Diff line number	Diff line change
`@@ -464,6 +464,12 @@ def _is_cygwin_git(git_executable: str) -> bool:`
`464`	`464`
`465`	`465`	`# Just a name given, not a real path.`
`466`	`466`	`uname_cmd = osp.join(git_dir, "uname")`
	`467`	`+`
	`468`	`+if not (pathlib.Path(uname_cmd).exists() and os.access(uname_cmd, os.X_OK)):`
	`469`	`+_logger.debug(f"Failed checking if running in CYGWIN: {uname_cmd} is not an executable")`
	`470`	`+_is_cygwin_cache[git_executable] = is_cygwin`
	`471`	`+return is_cygwin`
	`472`	`+`
`467`	`473`	`process = subprocess.Popen([uname_cmd], stdout=subprocess.PIPE, universal_newlines=True)`
`468`	`474`	`uname_out, _ = process.communicate()`
`469`	`475`	`# retcode = process.poll()`