Bug 1806134: Use --no-ansi with Poetry to avoid an unexpected error r=marco

Also, pin poetry at the same time

Differential Revision: https://phabricator.services.mozilla.com/D165184

taskcluster/docker/updatebot/privileged-setup.sh

@@ -77,6 +77,6 @@ chown -R worker:worker .
 chown -R worker:worker .*
 
 python3 -m pip install -U pip
-python3 -m pip install poetry
+python3 -m pip install poetry==1.2.2
 
 rm -rf /setup

taskcluster/docker/updatebot/setup.sh

@@ -11,4 +11,4 @@ cp /etc/ssh/ssh_known_hosts "$HOME/ssh_known_hosts"
 
 # If poetry is not run as worker, then it won't work when run as user later.
 cd /builds/worker/updatebot
-/usr/local/bin/poetry install -vv
+/usr/local/bin/poetry install --no-ansi