Update Go version to 1.25.3 in pipeline and module files

Author: teresaromero

.buildkite/pipeline.yml

@@ -36,8 +36,8 @@ steps:
         key: windows-test
         command: ".buildkite/scripts/run-win-tests.ps1"
         env:
-          # Latest 1.24 version supported by Chocolatey.
-          GO_VERSION: "1.24.6"
+          # Latest 1.25 version supported by Chocolatey.
+          GO_VERSION: "1.25.3"
         agents:
           provider: "gcp"
           image: "${GO_WINDOWS_AGENT_IMAGE}"

.go-version

@@ -1 +1 @@
-1.24.7
+1.25.3

compliance/go.mod

@@ -1,6 +1,6 @@
 module github.com/elastic/package-spec/compliance
 
-go 1.24.2
+go 1.25.3
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0

go.mod

@@ -1,6 +1,6 @@
 module github.com/elastic/package-spec/v3
 
-go 1.24.0
+go 1.25.3
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0