debian/control: Use explicit named package for go version

So that authd can be easily compiled on other versions such as 22.04,
and in case that we forget to update this value when bumping our go.mod
toolchain, then we'll fail at debian build phase (as expected)

debian/control

@@ -10,7 +10,7 @@ Build-Depends: debhelper-compat (= 13),
                dh-exec,
                dh-golang,
                dctrl-tools,
-               golang-go (>= 2:1.23~),
+               golang-1.23-go,
                libc6-dev (>= 2.35),
                libglib2.0-dev,
                libpam0g-dev,

debian/rules

@@ -6,6 +6,8 @@ include /usr/share/rustc/architecture.mk
 # The package name for authd, used only locally to avoid repetitions
 AUTHD_GO_PACKAGE := $(shell grep-dctrl -s XS-Go-Import-Path -n - ./debian/control)
 
+AUTHD_GO_VERSION := $(shell grep-dctrl -s Build-Depends -n - ./debian/control | sed -n "s,.*\bgolang-\([0-9.]\+\)\b.*,\1,p")
+
 export GOFLAGS := -ldflags=-X=$(AUTHD_GO_PACKAGE)/internal/consts.Version=$(shell dpkg-parsechangelog -S Version) --mod=vendor -buildmode=pie
 
 export DEB_BUILD_MAINT_OPTIONS := optimize=-lto
@@ -47,6 +49,8 @@ export AUTHD_SKIP_ROOT_TESTS := 1
 export DH_GOLANG_BUILDPKG := $(AUTHD_GO_PACKAGE)/... \
 	$(NULL)
 
+export PATH := /usr/lib/go-$(AUTHD_GO_VERSION)/bin:$(shell printenv PATH)
+
 BUILDDIR := $(CURDIR)/obj-$(DEB_HOST_GNU_TYPE)
 
 export BUILT_PAM_LIBS_PATH := obj-$(DEB_HOST_GNU_TYPE)/src/$(AUTHD_GO_PACKAGE)/pam