fix: pin kube-ovn to 1.13.14 (#1347)

Author: rackerchris

base-helm-configs/kube-ovn/kube-ovn-helm-overrides.yaml

@@ -9,7 +9,7 @@ global:
     kubeovn:
       repository: kube-ovn
       vpcRepository: vpc-nat-gateway
-      tag: v1.14.15
+      tag: v1.13.14
       support_arm: true
       thirdparty: true