PactContractConverter ignores boolean fields in yaml during conversion to json

[heroInCommunity]

Having yaml like this:

...
response:
  ...
  body:
    someBoolean: true
    someNumber: 1
    someString: "str"

Json file created by conversion using PactContractConverter has 'someBoolean' field missing, while other fields are present.

version 3.0.4 is used