Merge pull request #200 from graphql-python/dependabot/pip/examples/falcon_mongoengine/waitress-2.1.2

Bump waitress from 2.1.1 to 2.1.2 in /examples/falcon_mongoengine

Author: arunsureshkumar

examples/falcon_mongoengine/requirements.txt

@@ -1,6 +1,6 @@
 falcon==2.0.0
 mongoengine==0.17.0
 graphene-mongo
-waitress==2.1.1
+waitress==2.1.2
 pytest==4.6.3
 mongomock==3.16.0