use a bit less memory for bubble api

automation/roles/bubble_finalizer/files/bubble_role.json

@@ -6,7 +6,7 @@
     {"name": "server_alias", "value": "[[network.networkDomain]]"},
     {"name": "restore_key", "value": "[[restoreKey]]"},
     {"name": "install_type", "value": "[[installType]]"},
-    {"name": "bubble_java_opts", "value": "-Xms[[expr nodeSize.memoryMB '//' 2]]m -Xmx[[expr nodeSize.memoryMB '//' 2]]m"}
+    {"name": "bubble_java_opts", "value": "-Xms[[expr nodeSize.memoryMB '//' '2.25']]m -Xmx[[expr nodeSize.memoryMB '//' '2.25']]m"}
   ],
   "optionalConfigNames": ["restore_key"],
   "tgzB64": ""

utils/cobbzilla-utils

@@ -1 +1 @@
-Subproject commit cd654568baeef1c11c9599d6029f1a930b5db2aa
+Subproject commit 2d2f7169b6e4135c16a2ac2ddae7862d973387e5