Changes to List or filter all LeadMerge activities

for the query request parameter _limit, the max was set to 100.00

for the query request parameter _skip, the max was set to 250000.00

added the media type application/json for the response with the status 400

added the media type application/json for the response with the status 401

added the non-success response with the status 403

added the non-success response with the status 429

removed the non-success response with the status 404

added the new optional query request parameter _fields