Update mlflow network policy to allow 8443 egress (#9034)

Author: nananosirova

manifests/modules/mlflow/networkpolicy.yaml

@@ -36,6 +36,13 @@ spec:
       ports:
         - port: 6443
           protocol: TCP
+    - to:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/instance: mlflow
+      ports:
+        - port: 8443
+          protocol: TCP
     - to:
         - ipBlock:
             cidr: 0.0.0.0/0