Update custom package

Author: ryancooley

composer.json

@@ -104,7 +104,7 @@
         "processmaker": {
             "build": "3b176132",
             "custom": {
-                "package-ellucian-ethos": "1.15.5",
+                "package-ellucian-ethos": "1.15.6",
                 "package-plaid": "1.5.0",
                 "paypal-package": "dev-fall",
                 "pps-adsync": "dev-fall",