bump v0.4

Author: patroqueeet

setup.py

@@ -10,7 +10,7 @@
 setup(
     name="django-dbbackup-s3",
     python_requires=">=3.7.0",
-    version="0.3",
+    version="0.4",
     author="Jirka Schaefer",
     author_email="[email protected]",
     packages=["storage_sync", "storage_sync.management.commands"],