Omegaconf upgrade (#4997)

* Fix Flake8 Violations

* Update omegaconf version to be compatible with python 3.11

Author: nargokul

pyproject.toml

@@ -40,7 +40,7 @@ dependencies = [
   "importlib-metadata>=1.4.0,<7.0",
   "jsonschema",
   "numpy>=1.9.0,<2.0",
-  "omegaconf>=2.2,<2.3",
+  "omegaconf>=2.2,<=2.3",
   "packaging>=20.0",
   "pandas",
   "pathos",