chore: version bump for release

Author: iamsobanjaved

setup.py

@@ -49,7 +49,7 @@ def is_requirement(line):
 
 setup(
     name='lti-consumer-xblock',
-    version='3.0.3',
+    version='3.0.4',
     author='Open edX project',
     author_email='oscm@edx.org',
     description='This XBlock implements the consumer side of the LTI specification.',