Update last release version (#473)

Update last release version for 0.5.0 release.

Signed-off-by: Dan Huang <dahuang@redhat.com>

Author: dhuangnm

setup.py

@@ -6,7 +6,7 @@
 from setuptools import setup
 from setuptools_git_versioning import count_since, get_branch, get_sha, get_tags
 
-LAST_RELEASE_VERSION = Version("0.3.0")
+LAST_RELEASE_VERSION = Version("0.4.0")
 TAG_VERSION_PATTERN = re.compile(r"^v(\d+\.\d+\.\d+)$")