Update 'last_known_schema_hash' in feature branch

This will be updated finally just before merging into master branch.

Signed-off-by: Ming Lu <ming.lu@cloud.com>

ocaml/idl/schematest.ml

@@ -3,7 +3,7 @@ let hash x = Digest.string x |> Digest.to_hex
 (* BEWARE: if this changes, check that schema has been bumped accordingly in
    ocaml/idl/datamodel_common.ml, usually schema_minor_vsn *)
 
-let last_known_schema_hash = "2923e663753266bbdcb313ed47bad726"
+let last_known_schema_hash = "49c51c0b5e895f42a1c9c19abb038b41"
 
 let current_schema_hash : string =
   let open Datamodel_types in