Problem description
Commonalities v0.5.0 will require some new updates after r2.1:

https://lf-camaraproject.atlassian.net/wiki/spaces/CAM/pages/79986689/Analysis+of+Commonalities+0.5.0

Expected behavior

• Remove sinkCredential from Subscription schema (Remove sinkCredential from Subscription schema in event-subscription-template.yaml Commonalities#400)
• Change subscription sink format from url to uri (Sink format corrected and indicated in API Design Guidelines Commonalities#414)
• Update the description for date-time properties regarding RFC 3339 (Add note and change descriptions for date-time formats Commonalities#404)

(Review if others appply)