Update CHANGELOG

Author: telday

CHANGELOG.md

@@ -26,3 +26,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
   [cybeark/conjur-openapi-spec#67](https://github.com/cyberark/conjur-openapi-spec/issues/67)
 - `all` query parameter supported on Roles endpoint.
   [cybeark/conjur-openapi-spec#68](https://github.com/cyberark/conjur-openapi-spec/issues/68)
+- Generic authenticator endpoints for authentication/other external authenticator requests.
+  [cyberark/conjur-openapi-spec#66](https://github.com/cyberark/conjur-openapi-spec/issues/66)
+  [cyberark/conjur-openapi-spec#74](https://github.com/cyberark/conjur-openapi-spec/issues/74)
+  [cyberark/conjur-openapi-spec#70](https://github.com/cyberark/conjur-openapi-spec/issues/70)
+  [cyberark/conjur-openapi-spec#75](https://github.com/cyberark/conjur-openapi-spec/issues/75)