Changes to GET /v4/users/:address/rewards/active-opportunities

added subschema #1 subschema #2 to the items/opportunity response property allOf list for the response status 200

removed subschema #1 subschema #2 from the items/opportunity response property allOf list for the response status 200

the items/earnedTokens/items/token/address response's property pattern was changed from ^(0x[a-fA-F0-9]{40}|[1-9A-HJ-NP-Za-km-z]{32,44}|[CG][A-Z0-9]{55})$ to ^(0x[a-fA-F0-9]{40}|[1-9A-HJ-NP-Za-km-z]{32,44}|[CG][A-Z0-9]{55}|0x[a-fA-F0-9]{64})$ for the status 200