Remove invalid release

Author: kzaitsev

CHANGELOG.md

@@ -14,10 +14,6 @@
 
 * [#50](https://github.com/ruby-grape/grape-swagger-entity/pull/50): Features/inheritance and discriminator - [@MaximeRDY](https://github.com/MaximeRDY).
 
-### 0.5.0 (June 29, 2020)
-
-Yanked due to invalid dependency
-
 ### 0.4.0 (May 30, 2020)
 
 #### Features