v1.5.2 (slackhq#612)

Update CHANGELOG for Nebula v1.5.2

Author: wadey

CHANGELOG.md

@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [1.5.1] - 2021-12-13
+## [1.5.2] - 2021-12-14
 
 ### Added
 
@@ -19,6 +19,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - `nebula-cert` will now enforce ipv4 addresses. (#604)
 
+- Warn on macOS if an unsafe route cannot be created due to a collision with an
+  existing route. (#610)
+
+- Warn if you set a route MTU on platforms where we don't support it. (#611)
+
 ### Fixed
 
 - Rare race condition when tearing down a tunnel due to `recv_error` and sending packets on another thread. (#590)
@@ -36,6 +41,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Upgraded `golang.org/x/crypto` to address an issue which allowed unauthenticated clients to cause a panic in SSH
   servers. (#603)
 
+## 1.5.1 - 2021-12-13
+
+(This release was skipped due to discovering #610 and #611 after the tag was
+created.)
+
 ## [1.5.0] - 2021-11-11
 
 ### Added
@@ -335,8 +345,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial public release.
 
-[Unreleased]: https://github.com/slackhq/nebula/compare/v1.5.1...HEAD
-[1.5.1]: https://github.com/slackhq/nebula/releases/tag/v1.5.1
+[Unreleased]: https://github.com/slackhq/nebula/compare/v1.5.2...HEAD
+[1.5.2]: https://github.com/slackhq/nebula/releases/tag/v1.5.2
 [1.5.0]: https://github.com/slackhq/nebula/releases/tag/v1.5.0
 [1.4.0]: https://github.com/slackhq/nebula/releases/tag/v1.4.0
 [1.3.0]: https://github.com/slackhq/nebula/releases/tag/v1.3.0