Write a regression test for resetCounters behaviour

[chris48s]

I added this in f59bf3b to reset the counters after we've finished validating each file. Without it, callLimit is applied across multiple file validations. I didn't add a test for it though.

TODO: Add a test (at cli level) that validates 11 files and asserts we can call a mock https://www.schemastore.org/api/json/catalog.json 11 times (rather than throwing Called https://www.schemastore.org/api/json/catalog.json >10 times. Possible circular reference).