chore: bump version to 1.6.0

Author: rexzhang

asgi_webdav/__init__.py

@@ -7,7 +7,7 @@
 
 
 __name__ = "ASGIWebDAV"
-__version__ = "1.5.0"
+__version__ = "1.6.0"
 
 __author__ = "Rex Zhang"
 __author_email__ = "rex.zhang@gmail.com"