fix: use environment variables for notifications

Author: ojongerius

serverless.yml

@@ -33,14 +33,14 @@ custom:
   webpack:
     webpackConfig: ./webpack.config.js
     includeModules: true
-  notification:
+  notification: # serverless-plugin-notification-ojongerius
     webhook:
       url: ${env:GITTER_WEBHOOK}
-  notifications:
+  notifications: # serverless-plugin-aws-alerts
     - protocol email
-      endpoint [email protected]
+      endpoint ${env:SERVERLESS_EMAIL_NOTIFICATIONS}
     - protocol https # Announce on Gitter
-      endpoint https://webhooks.gitter.im/e/957145b550e13c6d3a80
+      endpoint ${env:GITTER_WEBHOOK}
   alerts:
     stages: # Optionally - select which stages to deploy alarms to
       - production