chore(deps): update dependency go to 1.20

Author: renovate[bot]

.github/renovate.json5

@@ -5,7 +5,7 @@
     "master"
   ],
   constraints: {
-    "go": "1.19"
+    "go": "1.20"
   },
   extends: [
     // A lot of default settings that you can extend can be found in the presets section: https://docs.renovatebot.com/presets-compatibility/

gwy/templates/Dockerfile.tmpl

@@ -1,7 +1,7 @@
 # Template for grpc-gateway 
 
 ARG alpine_version=3.18
-ARG go_version=1.19
+ARG go_version=1.20
 FROM golang:$go_version-alpine$alpine_version AS build
 
 ARG go_version

variables.sh

@@ -7,7 +7,7 @@ CONTAINER=${DOCKER_REPO}${NAMESPACE}
 LATEST=${1:false}
 
 DEBIAN_VERSION=${DEBIAN_VERSION:-bullseye}
-GO_VERSION=${GO_VERSION:-1.19}
+GO_VERSION=${GO_VERSION:-1.20}
 GRPC_VERSION=${GRPC_VERSION:-1.51}
 GRPC_JAVA_VERSION=${GRPC_JAVA_VERSION:-1.51}
 GRPC_WEB_VERSION=${GRPC_WEB_VERSION:-1.4.2}