Pull in updated canonicaljson lib

so the protocol check just works

Author: David Robertson

poetry.lock

@@ -64,9 +64,7 @@
 try:
     from canonicaljson import set_json_library
 
-    # type-ignore: I think there has been a regression in mypy 1.0.0 in how it checks
-    # modules against Protocols.
-    set_json_library(json)  # type: ignore[arg-type]
+    set_json_library(json)
 except ImportError:
     pass