Bump version to 1.6.1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Burgyn

src/Directory.Build.props

@@ -17,7 +17,7 @@
     </PropertyGroup>
 
     <PropertyGroup>
-        <Version>1.6.0</Version>
+        <Version>1.6.1</Version>
         <Authors>Matej Grochal</Authors>
         <Company>KROS a.s.</Company>
         <Copyright>Copyright © KROS a.s.</Copyright>