Update changelog

Author: andersfugmann

Changelog.md

@@ -8,6 +8,8 @@
 - Improve copying of comments from .proto files into ocaml code using
   omd to parse markdown
 - Fix problem with deserializing large singed integers (#45)
+- Compile json test stub with C++14 mode
+- Fix unrolled annotation
 
 ## 6.1.0: 2024-04-25
 - Fix name resolution leading to wrongly mapped names