Merge pull request #1265 from k8s-infra-cherrypick-robot/cherry-pick-1264-to-release-1.10

[release-1.10] Update go version to 1.20.5 to address CVE fixes

Author: saikat-royc

Dockerfile

@@ -14,7 +14,7 @@
 
 ARG BUILDPLATFORM
 
-FROM --platform=$BUILDPLATFORM golang:1.20.3 as builder
+FROM --platform=$BUILDPLATFORM golang:1.20.5 as builder
 
 ARG STAGINGVERSION
 ARG TARGETPLATFORM