Update zarrita (#1169)

* update zarrita

* changelog

* zarrita 0.2.7

Author: normanrz

webknossos/Changelog.md

@@ -17,6 +17,7 @@ For upgrade instructions, please check the respective _Breaking Changes_ section
 ### Added
 
 ### Changed
+- Updates zarrita to 0.2.7. [#1169](https://github.com/scalableminds/webknossos-libs/pull/1169)
 
 ### Fixed