Bump Go to 1.23.4

Author: ARolek

Dockerfile

@@ -27,7 +27,7 @@
 #  $ docker run -v /path/to/docker-config:/opt/tegola_config -p 8080 tegola serve
 
 # Intermediary container for building
-FROM golang:1.23.2-alpine3.20 AS build
+FROM golang:1.23.4-alpine3.20 AS build
 
 ARG BUILDPKG="github.com/go-spatial/tegola/internal/build"
 ARG VER="Version Not Set"

go.mod

@@ -1,6 +1,6 @@
 module github.com/go-spatial/tegola
 
-go 1.23.2
+go 1.23.4
 
 require (
 	cloud.google.com/go/storage v1.28.1