Merge pull request RasaHQ#5729 from RasaHQ/dependabot/pip/packaging-20.3

Bump packaging from 19.0 to 20.3

Author: alwx

poetry.lock

@@ -91,7 +91,7 @@ rocketchat_API = ">=0.6.31,<1.4.0"
 colorhash = "~1.0.2"
 pika = "~1.1.0"
 jsonschema = "~3.2"
-packaging = "~19.0"
+packaging = ">=19.0,<20.4"
 gevent = ">=1.4,<1.6"
 pytz = "^2019.1"
 rasa-sdk = "^1.10.0"