Change version in citation file to 4.12

CITATION.cff

@@ -7,5 +7,5 @@ license: "LGPL-3.0"
 message: "If you use this software, please cite it using these metadata."
 repository-code: "https://github.com/ultimaker/cura/"
 title: "Ultimaker Cura"
-version: "4.10.0"
-...
+version: "4.12.0"
+...