feat(superset): Add needed Python libs for OIDC

superset/Dockerfile

@@ -56,6 +56,11 @@ RUN python3 -m venv /stackable/app \
         pydruid \
         python-ldap \
         trino[sqlalchemy] \
+        # Enables OIDC with superset. Since https://github.com/stackabletech/superset-operator/pull/530
+        # user can inject arbitrary python code into superset_conf.py. Thus OIDC configs can be changed
+        # and we want to offer necessary libraries
+        Flask_OIDC==2.2.0 \
+        Flask-OpenID==1.3.1\
         # Redhat has removed `tzdata` from the ubi-minimal images: see https://bugzilla.redhat.com/show_bug.cgi?id=2223028.
         # Superset relies on ZoneInfo (https://docs.python.org/3/library/zoneinfo.html#data-sources) to resolve time zones, and this is done
         # by searching first under `TZPATH` (which is empty due to the point above) or for the tzdata python package.