Fix dircolors NotADirectoryError (#5300)

* Update environ.py

* Create fix_dircolors_NotADirectoryError.rst

news/fix_dircolors_NotADirectoryError.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* Fixed NotADirectoryError during load dircolors.
+
+**Security:**
+
+* <news item>

xonsh/environ.py

@@ -485,7 +485,7 @@ class LsColors(cabc.MutableMapping):
             out = subprocess.check_output(
                 cmd, env=denv, text=True, stderr=subprocess.DEVNULL
             )
-        except (subprocess.CalledProcessError, FileNotFoundError):
+        except (subprocess.CalledProcessError, FileNotFoundError, NotADirectoryError):
             return cls(cls.default_settings)
         except OSError:
             # necessary to catch OSError: [WinError 740] The requested operation requires elevation