Log Message:
p5-JSON-MaybeXS: update to 1.004002.

1.004002 - 2020-05-17
 - fix test that fails when JSON::XS is installed, but below version 3.0
   (RT#132578)

1.004001 - 2020-05-01
 - document when is_bool became available
 - now favouring Cpanel::JSON::XS over JSON::XS in more situations (the former
   is always added to prereqs when a compiler is available, although JSON::XS
   is still used at runtime if new enough and Cpanel::JSON::XS is not
   installed). This makes boolean handling more predictable and consistent.