Update CHANGELOG.md for new release v0.7.0 (#3279)

<!-- PR description-->

Updating changelog for new release v0.7.0

#### Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [ ] ⛔ No

#### Type of change

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- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

#### Issue(s)

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* #<issue>

#### Test Plan

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- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] (beta)
 
+## [v0.7.0] (beta) - 2023-05-02
+
 ### Added
 - Permissions backup for OneDrive is now out of experimental (By default, only newly backed up items will have their permissions backed up. You will have to run a full backup to ensure all items have their permissions backed up.)
 - LocationRef is now populated for all services and data types. It should be used in place of RepoRef if a location for an item is required.
@@ -246,7 +248,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Miscellaneous
   - Optional usage statistics reporting ([RM-35](https://github.com/alcionai/corso-roadmap/issues/35))
 
-[Unreleased]: https://github.com/alcionai/corso/compare/v0.6.1...HEAD
+[Unreleased]: https://github.com/alcionai/corso/compare/v0.7.0...HEAD
+[v0.7.0]: https://github.com/alcionai/corso/compare/v0.6.1...v0.7.0
 [v0.6.1]: https://github.com/alcionai/corso/compare/v0.5.0...v0.6.1
 [v0.5.0]: https://github.com/alcionai/corso/compare/v0.4.0...v0.5.0
 [v0.4.0]: https://github.com/alcionai/corso/compare/v0.3.0...v0.4.0