Bump version to 2.4.4 (#398)

Author: saikonen

setup.py

@@ -22,7 +22,7 @@ def open_and_read_if_exists(path: str):
 
 setup(
     name="metadata_service",
-    version="2.4.3",
+    version="2.4.4",
     license="Apache License 2.0",
     description="Metadata Service: backend service for Metaflow",
     long_description=long_description,