chore(release): 5.2.1 release notes
chore(release): 5.2.1 release notes

## [5.2.1](https://github.com/watson-developer-cloud/dotnet-standard-sdk/compare/v5.2.0...v5.2.1) (2021-08-25)

### Bug Fixes

* **nlc:** add deprecation warning ([a2f15e9](https://github.com/watson-developer-cloud/dotnet-standard-sdk/commit/a2f15e9fa232ae13eca16d290cb2e80be8653c41)), closes [#9626](https://github.com/watson-developer-cloud/dotnet-standard-sdk/issues/9626)

watson-developer-cloud/dotnet-standard-sdk,watson-developer-cloud/dotnet-standard-sdk