Bump version to 0.12.2.0

Author: Bodigrim

bytestring.cabal

@@ -1,7 +1,7 @@
 Cabal-Version: 2.2
 
 Name: bytestring
-Version: 0.12.1.0
+Version: 0.12.2.0
 Synopsis: Fast, compact, strict and lazy byte strings with a list interface
 Description:
  An efficient compact, immutable byte string type (both strict and lazy)