Decline Contract Request tests

n/n	Description	Inputs	expected result	actual result
DCR1	Decline Contract Request without scope	token id json	403	403
DCR2	Decline Contract Request by other role than `NHS ADMIN SIGNER`	token NHS_OWNER id json	403	403
DCR3	Decline Contract Reuqest in status<>'NEW'	token id request in status<>NEW	422	422, Incorrect status of contract_request to modify it
DCR4	Decline Contract Reuqest with ID doesn't exist	token id doesn't exist	404	404,
DCR5	Decline contract request with not fulfilled updated fields	token id not updated request	200	200
DCR6	Decline contract Request		200, status = 'DECLINED', event added to event_manager	200
DCR7	Decline contract Request with not valid DRFO	token and drfo belongs to different employees id json	422	422, Does not match the signer drfo
DCR8	Decline contract Request with invalid contractor_legal_entity.drfo	token id json with invalid signed content	422	400, Signed content doesn't match with contract request