CCM-15019: Setting mandatory fields and dataschemaversion to 1.0.0

Author: nhsd-angel-pastor

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

@@ -23,17 +23,13 @@ properties:
       - data
   dataschemaversion:
     type: string
-    const: "1.0"
+    const: "1.0.0"
     description: Data Schema version (fixed to 1.0).
     examples:
-      - "1.0"
+      - "1.0.0"
   datacontenttype:
     type: string
     const: "application/json"
     description: Data Content type (fixed to application/json).
     examples:
       - "application/json"
-required:
-  - dataschema
-  - dataschemaversion
-  - datacontenttype