Log Message:
Update devel/py-canonicaljson to 1.4.0

Version 1.4.0 released 2020-09-03

* Fix producing non-standard JSON for Infinity, -Infinity, and NaN. This could
  cause errors when encoding objects into canonical JSON that previously used to
  work, but were incompatible with JSON implementations in other languages.
* Use UTF-8 to fix ASCII encoding errors when data containing Unicode was
  attempted to be pretty-printed.