Fix the conftest rails-ex branch switch.

When translating the bash to python, the bash condition was
'<= 3.1', not '< 3.1', therefore the range inversion is '> 3.1'.
Since we also removed the 3.1, just bump it properly to '>= 3.3'.

Author: jackorp

test/conftest.py

@@ -52,7 +52,7 @@
 PSQL_IMAGE_SHORT = f"postgresql:12{PSQL_TAG}"
 PSQL_IMAGE_TAG = f"12{PSQL_TAG}"
 TEST_APP_BRANCH = "master"
-if VERSION and float(VERSION) >= 3.1:
+if VERSION and float(VERSION) >= 3.3:
     TEST_APP_BRANCH = "3.3"
 DEPLOYED_PSQL_IMAGE = "quay.io/sclorg/postgresql-12-c8s"
 VARS = Vars(