fix(NET-1175): use default trial end date

[Aceix]

this "more recent" arbitrary date is needed for hubspot to consume exported data without throwing out of date range exeptions

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• [ ] My changes affect only 10 files or less.
• [ ] I have performed a self-review of my code and tested it.
• [ ] If it is a new feature, I have added thorough tests, my code is <= 1450 lines.
• [ ] If it is a bugfix, my code is <= 200 lines.
• [ ] My functions are <= 80 lines.
• [ ] I have had my code reviewed by a peer.
• [ ] My unit tests pass locally.
• [ ] Netmaker is awesome.