feat(go): use go 1.25.3 (#825)

Author: Proximyst

go.Dockerfile

@@ -3,7 +3,7 @@
 #        -> Why static linking? We want to ensure we can switch base-image with little to no effort.
 #   2. It builds a running environment. This is the environment that exists for the Go binary, and should have all necessary pieces to run the application.
 
-FROM golang:1.24.6-alpine AS app
+FROM golang:1.25.3-alpine AS app
 
 RUN apk add --no-cache git
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/grafana/grafana-image-renderer
 
-go 1.24.6
+go 1.25.3
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0