hack: force go version to 1.20.5

A temporary workaround for "http: invalid Host header" introduced in
go 1.20.6.

Signed-off-by: Justin Chadwell <me@jedevc.com>
(cherry picked from commit c4bec05466)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20
+ARG GO_VERSION=1.20.5
 ARG XX_VERSION=1.2.1
 
 ARG DOCKER_VERSION=24.0.2

docker-bake.hcl

@@ -1,5 +1,5 @@
 variable "GO_VERSION" {
-  default = "1.20"
+  default = "1.20.5"
 }
 variable "DOCS_FORMATS" {
   default = "md"