action: add python-pyasn1-modules to the list of packages to remove

Author: EmilienM

action.yaml

@@ -25,7 +25,7 @@ runs:
       shell: bash
     # See http://lists.openstack.org/pipermail/openstack-discuss/2020-October/018060.html
     - name: Remove python3-simplejson
-      run: sudo apt-get purge -y python3-simplejson || true
+      run: sudo apt-get purge -y python3-simplejson python-pyasn1-modules || true
       shell: bash
     - name: Checkout Devstack
       uses: actions/checkout@v2