Modify version and URL for HiGHS release

Updated version and URL in CITATION.cff

Author: jajhall

CITATION.cff

@@ -6,14 +6,10 @@ authors:
   email: [email protected]
 - given-names: Ivet
   family-names: Galabova
-- given-names: Leona
-  family-names: Gottwald
-- given-names: Michael
-  family-names: Feldmeier
 title: "HiGHS"
-version: 1.2.2
+version: 1.12.0
 date-released: 2022-04-18
-url: "https://github.com/ERGO-Code/HiGHS/releases/tag/v1.2.2"
+url: "https://github.com/ERGO-Code/HiGHS/releases/tag/v1.12.0"
 preferred-citation:
   type: article
   authors: