Handle monkey-patched stdout (#404)

* Handle monkey-patched stdout

In some Python environments (e.g. Maya 2022's mayapy.exe), sys.stdout has been monkey-patched to something other than the expected stdout. As such, it doesn't actually have an `isatty` method and raises an AttributeError in response.

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/structlog/_config.py

@@ -40,7 +40,10 @@
     set_exc_info,
     TimeStamper(fmt="%Y-%m-%d %H:%M.%S", utc=False),
     ConsoleRenderer(
-        colors=_use_colors and sys.stdout is not None and sys.stdout.isatty()
+        colors=_use_colors
+        and sys.stdout is not None
+        and hasattr(sys.stdout, "isatty")
+        and sys.stdout.isatty()
     ),
 ]
 _BUILTIN_DEFAULT_CONTEXT_CLASS = cast(Type[Context], dict)