Update Go to 1.20.6,1.19.11

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 and Go issue https://go.dev/issue/60374

Signed-off-by: Danny Canter <danny@dcantah.dev>

Vagrantfile

@@ -101,7 +101,7 @@ EOF
   config.vm.provision "install-golang", type: "shell", run: "once" do |sh|
     sh.upload_path = "/tmp/vagrant-install-golang"
     sh.env = {
-        'GO_VERSION': ENV['GO_VERSION'] || "1.20.5",
+        'GO_VERSION': ENV['GO_VERSION'] || "1.20.6",
     }
     sh.inline = <<~SHELL
         #!/usr/bin/env bash