NR: bump to five merge queue workers

pipservice-github-merge-queue-notifier.service

diff --git a/pipservice-github-merge-queue-notifier.service b/pipservice-github-merge-queue-notifier.service
index 40e0bbb..1297d2e 100644
--- a/pipservice-github-merge-queue-notifier.service
+++ b/pipservice-github-merge-queue-notifier.service
@@ -4,7 +4,7 @@
 [Service]
 Type=simple
 WorkingDirectory=/opt/github-merge-queue-notifier
-ExecStart=/usr/local/bin/pipenv run hypercorn mergequeue:app -b localhost:8085 -w 3
+ExecStart=/usr/local/bin/pipenv run hypercorn mergequeue:app -b localhost:8085 -w 5
 Restart=always
 User=www-data
 Group=www-data