We need to update all the prow jobs across the service mesh team that are currently using OCP 4.19 as the default testing release because 4.20 is GA now. With this, we will also need to update the testing matrix  (we don't have template, so it will be updated once the new release test matrix will be cloned from the previous one )

Istio: https://github.com/openshift/release/pull/70636 
Sail Operator: https://github.com/openshift/release/pull/70641 
Proxy/Ztunnel:  https://github.com/openshift/release/pull/70647 
lpinterop: https://github.com/openshift/release/pull/70659