Increase the number of days backups are
kept for OneDrive and Exchange for better
test coverage. They now last past the
complete maintenance time
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#### Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
#### Type of change
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [x] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #3799
#### Test Plan
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E
661180e0b3