build: update CI+release version to Go 1.25.2

We also update the go.mod files to pin to Go 1.24.8.

tools/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24.6
+FROM golang:1.25.2
 
 RUN apt-get update && apt-get install -y git
 ENV GOCACHE=/tmp/build/.cache

tools/go.mod

@@ -1,6 +1,6 @@
 module github.com/lightningnetwork/lnd/tools
 
-go 1.24.6
+go 1.24.8
 
 require (
 	github.com/btcsuite/btcd v0.24.2

tools/linters/go.mod

@@ -1,6 +1,6 @@
 module github.com/lightningnetwork/lnd/tools/linters
 
-go 1.24.6
+go 1.24.8
 
 require (
 	github.com/golangci/plugin-module-register v0.1.1