Cut Haiku 0.0.6 release.

PiperOrigin-RevId: 428442846

Author: tomhennigan

haiku/__init__.py

@@ -118,7 +118,7 @@
 from haiku._src.typing import State
 from haiku._src.utils import get_channel_index
 
-__version__ = "0.0.6.dev"
+__version__ = "0.0.6"
 
 __all__ = (
     "AvgPool",