Merge pull request #195 from graphql-python/dependabot/pip/examples/falcon_mongoengine/waitress-2.1.1

Bump waitress from 1.4.3 to 2.1.1 in /examples/falcon_mongoengine

Author: blochsbek

examples/falcon_mongoengine/requirements.txt

@@ -1,6 +1,6 @@
 falcon==2.0.0
 mongoengine==0.17.0
 graphene-mongo
-waitress==1.4.3
+waitress==2.1.1
 pytest==4.6.3
 mongomock==3.16.0