fix: remove tlsroute/udproute

https://github.com/kubernetes-sigs/external-dns/issues/6247

these are still using the alpha crd names. the feature has not been
released for externaldns yet. we would need to build our own version of
externaldns from master (or wait)

- disable tlsroute/udproute

apps/overlays/au-syd1/externaldns/values.yaml

@@ -25,10 +25,8 @@ sources:
   - service
   - ingress
   - gateway-httproute
-  - gateway-tlsroute
   - gateway-grpcroute
   - gateway-tcproute
-  - gateway-udproute
 
 # Environment variables for TSIG secret and algorithm from Vault
 env: