Missing warning when no authorizer in found ZMQ handlers

[Zsailer]

Looks like I missed one more place where a warning is needed when no authorizer is set.

Fixes #737 (hopefully completely).

[blink1073]

"Update - GitHub Actions is experiencing degraded performance. We are still investigating and will provide an update when we have one."

https://www.githubstatus.com/

[kevin-bates]

Is this a candidate as well?

jupyter_server/jupyter_server/terminal/handlers.py

Line 31 in 7f2863f

if not self.authorizer.is_authorized(self, user, "execute", self.auth_resource):

[Zsailer]

good catch, @kevin-bates! Fixed!

[blink1073]

Let's hold off on trying to do any merging/releasing until GitHub is back in good shape.