ci: increase mem alloc

Jenkinsfile

-@Library('releng-pipeline') _
+@Library('releng-pipeline@v0.12.0') _
 
 hugo (
   appName: 'www.eclipse.org',
@@ -7,8 +7,9 @@ hugo (
   previewBranchesRegex: "staging",
   build: [
     containerImage: 'eclipsefdn/hugo-node:h0.110.0-n18.13.0',
+    containerBuildMemoryLimits: '4Gi'
   ],
   deployment: [
     nginxServerConf: 'config/nginx/default.conf'
   ]
-)
+)
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