[Vespa] Update to optimized configuration pt.2 (onyx-dot-app#5113)

Author: justin-tahara

backend/ee/onyx/document_index/vespa/app_config/cloud-services.xml.jinja

@@ -18,9 +18,9 @@
             <!-- <document type="danswer_chunk" mode="index" /> -->
 {{ document_elements }}
         </documents>
-        <nodes count="75">
-            <resources vcpu="8.0" memory="64.0Gb" architecture="arm64" storage-type="local"
-                disk="474.0Gb" />
+        <nodes count="60">
+            <resources vcpu="8.0" memory="128.0Gb" architecture="arm64" storage-type="local"
+                disk="475.0Gb" />
         </nodes>
         <engine>
             <proton>