Update schemas to v2.0.0. Closes #336 (#337)

Closes #336

Author: garrytrinder

CHANGELOG.md

@@ -9,6 +9,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [1.9.0] - Unreleased
 
+### Changed:
+
+- Snippets: All snippets that reference schemas updated to use `v2.0.0` schema
+
 ## [1.8.0] - 2025-30-10
 
 ### Added: