Bump version to v0.22.1. [skip ci]

Author: Paebbels

pyVHDLModel/__init__.py

@@ -48,7 +48,7 @@
 __email__ =     "[email protected]"
 __copyright__ = "2016-2023, Patrick Lehmann"
 __license__ =   "Apache License, Version 2.0"
-__version__ =   "0.22.0"
+__version__ =   "0.22.1"
 
 
 from enum                      import unique, Enum, Flag, auto