Update email address used for release commit

Closes gh-27764

ci/scripts/stage.sh

@@ -30,7 +30,7 @@ echo "Staging $stageVersion (next version will be $nextVersion)"
 sed -i "s/version=$snapshotVersion/version=$stageVersion/" gradle.properties
 
 git config user.name "Spring Buildmaster" > /dev/null
-git config user.email "buildmaster@springframework.org" > /dev/null
+git config user.email "spring-buildmaster@users.noreply.github.com" > /dev/null
 git add gradle.properties > /dev/null
 git commit -m"Release v$stageVersion" > /dev/null
 git tag -a "v$stageVersion" -m"Release v$stageVersion" > /dev/null