build: upgrade go to v1.23.1

[jbrill]

When building aperture I'm receiving:

4.151 OK: 213 MiB in 51 packages
4.184 Cloning into '/go/src/github.com/lightninglabs/aperture'...
4.843 Already on 'master'
4.843 Your branch is up to date with 'origin/master'.
4.855 go: errors parsing go.mod:
4.855 /go/src/github.com/lightninglabs/aperture/go.mod:3: invalid go version '1.22.6': must match format 1.23
4.855 /go/src/github.com/lightninglabs/aperture/go.mod:5: unknown directive: toolchain
4.857 go install -v github.com/lightninglabs/aperture/cmd/aperture
4.859 go: errors parsing go.mod:
4.859 /go/src/github.com/lightninglabs/aperture/go.mod:3: invalid go version '1.22.6': must match format 1.23
4.859 /go/src/github.com/lightninglabs/aperture/go.mod:5: unknown directive: toolchain
4.859 make: *** [Makefile:61: install] Error 1
------

This PR upgrades the Dockerfile to use v1.23.1-alpine.

[jbrill]

Closing for now as golangci-lint does not yet support v1.23.1