go lang version update

Signed-off-by: Santhosh <santhosh@spectrocloud.com>

Earthfile

@@ -6,7 +6,7 @@ ARG IMAGE_REPOSITORY=quay.io/kairos
 
 ARG LUET_VERSION=0.34.0
 ARG GOLINT_VERSION=v1.52.2
-ARG GOLANG_VERSION=1.20.3
+ARG GOLANG_VERSION=1.19.8
 
 ARG RKE2_VERSION=latest
 ARG BASE_IMAGE_NAME=$(echo $BASE_IMAGE | grep -o [^/]*: | rev | cut -c2- | rev)