Bump version to 0.2.1 for Maven Central publish (#430)

The v0.2.0 tag pointed to a commit before the publish workflow fix,
so re-releasing as 0.2.1 with the corrected task configuration.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: wow-miley

gradle.properties

@@ -26,4 +26,4 @@ sqldelight.version=2.2.1
 mosaic.version=0.18.0
 
 #Ampere
-ampereVersion=0.2.0
+ampereVersion=0.2.1