[Hello World Tutorial] Bump Golang alpine docker image version to 1.25.7-alpine3.23 (#8798)

chore: Update the value of the golang docker image for pipelines in t...

... he 'Hello World!' tutorial

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content/doc/pipeline/tour/hello-world.adoc

@@ -191,7 +191,7 @@ node {
 // Declarative //
 /* Requires the Docker Pipeline plugin */
 pipeline {
-    agent { docker { image 'golang:1.25.6-alpine3.23' } }
+    agent { docker { image 'golang:1.25.7-alpine3.23' } }
     stages {
         stage('build') {
             steps {