databases/mongodb36: update 3.6.20 -> 3.6.21
- Remove download.mongodb.org. It does not work anymore.
PR: 251157
Submitted by: Ronald Klop <ronald-lists@klop.ws>
Approved by: Vlad Galu <dev@dudu.ro> (maintainer)
Relnotes: https://docs.mongodb.com/manual/release-notes/3.6/