Always use latest go minor versions

Stay on the go 1.23 series, but default to the latest released minor version. This way we're always
pulling in the latest bug and security fixes. Already running this in our production setup without
issues. Just looking to upstream it.

Dockerfile

@@ -1,5 +1,5 @@
 # Start by building the application.
-FROM golang:1.23.0-bullseye AS build
+FROM golang:1.23-bullseye AS build
 
 # build libsodium (dep of libzmq)
 WORKDIR /build