WIP: community/py3-prompt_toolkit: upgrade to 3.0.5

Ref https://github.com/prompt-toolkit/python-prompt-toolkit/blob/master/CHANGELOG#L4

Not all of dependencies supports it https://github.com/dbcli/mycli/blob/master/setup.py#L22 https://github.com/dbcli/mycli/pull/853

• !6975 (merged)
• https://github.com/ipython/ipython/blob/master/setup.py#L191