ver: bump version to 0.5.0

Author: zmsn-2077

CHANGELOG.md

@@ -7,7 +7,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## v0.5.0
 
 ### Features
 

omnisafe/version.py

@@ -14,7 +14,7 @@
 # ==============================================================================
 """OmniSafe: A comprehensive and reliable benchmark for safe reinforcement learning."""
 
-__version__ = '0.3.0'
+__version__ = '0.5.0'
 __license__ = 'Apache License, Version 2.0'
 __author__ = 'OmniSafe Contributors'
 __release__ = False