Mention our CppInterOp release

Author: vgvassilev

_data/news.yml

@@ -1,3 +1,7 @@
+- date: 1 March 2024
+  headline: "CppInterOp 1.2.0 released"
+  link: "https://github.com/compiler-research/CppInterOp/releases/tag/v1.2.0"
+
 - date: 29 February 2024
   headline: "Clad 1.4 released"
   link: "https://github.com/vgvassilev/clad/releases/tag/v1.4"