Upgrading to ISTO 1.13.1 and getting errors

Hi All, We are upgrading to ISTIO 1.13.1. When we run the following command ‘istioctl x precheck’ then we get the following errors below. Can anyone tell us what the new annotations or parameters are for ‘CPU and Memory Resource limiting’? Or are these normal and we can proceed with the upgrade? Annotation “sidecar.istio.io/proxyCPULimit” is part of an alpha-phase feature and may be incompletely supported.
Annotation “sidecar.istio.io/proxyMemoryLimit” is part of an alpha-phase feature and may be incompletely supported.
Annotation “sidecar.istio.io/proxyCPU” is part of an alpha-phase feature and may be incompletely supported.
Annotation “sidecar.istio.io/proxyMemory” is part of an alpha-phase feature and may be incompletely supported.
Appreciate anyone’s help. Thank You.

Hello i am also getting same warnings while precheck. is it safe for proceeding with the upgrade? what did you do?