fix: increase helm install timeout

Author: tkcontiant

tests/kuttl-test-self-hosted-postgres.yaml

@@ -15,7 +15,7 @@ commands:
       --set global.postgresql.auth.password=postgres
       --set global.postgresql.auth.username=postgres
       --wait
-    timeout: 120
+    timeout: 240
   - command: >-
       helm install -n $NAMESPACE ext-postgres-operator ./charts/ext-postgres-operator
       --set image.repository=postgres-operator