update go to go1.20.6

go1.20.6 (released 2023-07-11) includes a security fix to the net/http package,
as well as bug fixes to the compiler, cgo, the cover tool, the go command,
the runtime, and the crypto/ecdsa, go/build, go/printer, net/mail, and text/template
packages. See the Go 1.20.6 milestone on our issue tracker for details.

https://github.com/golang/go/issues?q=milestone%3AGo1.20.6+label%3ACherryPickApproved

Full diff: https://github.com/golang/go/compare/go1.20.5...go1.20.6

These minor releases include 1 security fixes following the security policy:

net/http: insufficient sanitization of Host header

The HTTP/1 client did not fully validate the contents of the Host header.
A maliciously crafted Host header could inject additional headers or entire
requests. The HTTP/1 client now refuses to send requests containing an
invalid Request.Host or Request.URL.Host value.

Thanks to Bartek Nowotarski for reporting this issue.

Includes security fixes for [CVE-2023-29406 ][1] and Go issue https://go.dev/issue/60374

[1]: https://github.com/advisories/GHSA-f8f7-69v5-w4vx

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 1ead2dd35d)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

.github/workflows/.windows.yml

@@ -15,7 +15,7 @@ on:
         default: false
 
 env:
-  GO_VERSION: "1.20.5"
+  GO_VERSION: "1.20.6"
   GOTESTLIST_VERSION: v0.3.1
   TESTSTAT_VERSION: v0.1.3
   WINDOWS_BASE_IMAGE: mcr.microsoft.com/windows/servercore

.github/workflows/test.yml

@@ -15,7 +15,7 @@ on:
   pull_request:
 
 env:
-  GO_VERSION: "1.20.5"
+  GO_VERSION: "1.20.6"
   GOTESTLIST_VERSION: v0.3.1
   TESTSTAT_VERSION: v0.1.3
   ITG_CLI_MATRIX_SIZE: 6

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20.5
+ARG GO_VERSION=1.20.6
 ARG BASE_DEBIAN_DISTRO="bullseye"
 ARG GOLANG_IMAGE="golang:${GO_VERSION}-${BASE_DEBIAN_DISTRO}"
 ARG XX_VERSION=1.2.1

Dockerfile.simple

@@ -5,7 +5,7 @@
 
 # This represents the bare minimum required to build and test Docker.
 
-ARG GO_VERSION=1.20.5
+ARG GO_VERSION=1.20.6
 
 ARG BASE_DEBIAN_DISTRO="bullseye"
 ARG GOLANG_IMAGE="golang:${GO_VERSION}-${BASE_DEBIAN_DISTRO}"

Dockerfile.windows

@@ -165,7 +165,7 @@ FROM microsoft/windowsservercore
 # Use PowerShell as the default shell
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
-ARG GO_VERSION=1.20.5
+ARG GO_VERSION=1.20.6
 ARG GOTESTSUM_VERSION=v1.8.2
 ARG GOWINRES_VERSION=v0.3.0
 ARG CONTAINERD_VERSION=v1.7.1