support new release

Change-Id: If5004c9503bca327f34f9f2ba96ca4b2f025ec9f
Reviewed-on: https://review.couchbase.org/c/perfrunner/+/191930
Tested-by: Build Bot <[email protected]>
Reviewed-by: vikas chaudhary <[email protected]>

Author: bochun

perfrunner/utils/trigger.py

@@ -23,6 +23,7 @@
     'cheshire-cat': '7.0.0',
     'neo': '7.1.0',
     'elixir': '7.2.0',
+    'trinity': '7.6.0',
     'morpheus': '8.0.0'
 }