DELETE: dataschemaversion with semantic versioning

Author: nhsd-angel-pastor

src/cloudevents/domains/digital-letters/2025-10-draft/digital-letters-profile.schema.yaml

@@ -23,10 +23,11 @@ properties:
       - data
   dataschemaversion:
     type: string
-    const: "1.0"
-    description: Data Schema version (fixed to 1.0).
+    pattern: ^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$
+    description: Version of the event payload schema (semantic versioning format).
     examples:
-      - "1.0"
+      - 1.0.0
+    $comment: Version of the event payload schema (semantic versioning, see https://semver.org/).
   datacontenttype:
     type: string
     const: "application/json"