py-virtualenv: updated to 20.16.5

v20.16.5 (2022-09-07)
---------------------

Bugfixes - 20.16.5
~~~~~~~~~~~~~~~~~~
- Do not turn echo off for subsequent commands in batch activators
  (``activate.bat`` and ``deactivate.bat``) - by :user:`pawelszramowski`.

v20.16.4 (2022-08-29)
---------------------

Bugfixes - 20.16.4
~~~~~~~~~~~~~~~~~~
- Bump embed setuptools to ``65.3`` - by :user:`gaborbernat`.

v20.16.3 (2022-08-04)
---------------------

Bugfixes - 20.16.3
~~~~~~~~~~~~~~~~~~
- Upgrade embedded pip to ``22.2.2`` from ``22.2.1`` and setuptools to ``63.4.1`` from ``63.2.0`` - by :user:`gaborbernat`.

v20.16.2 (2022-07-27)
---------------------

Bugfixes - 20.16.2
~~~~~~~~~~~~~~~~~~
- Bump embeded pip from ``22.2`` to ``22.2.1`` - by :user:`gaborbernat`.

v20.16.1 (2022-07-26)
---------------------

Features - 20.16.1
~~~~~~~~~~~~~~~~~~
- Update Nushell activation scripts to version 0.67 - by :user:`kubouch`.

v20.16.0 (2022-07-25)
---------------------

Features - 20.16.0
~~~~~~~~~~~~~~~~~~
- Drop support for running under Python 2 (still can generate Python 2 environments) - by :user:`gaborbernat`.
- Upgrade embedded pip to ``22.2`` from ``22.1.2`` and  setuptools to ``63.2.0`` from ``62.6.0`` -
  by :user:`gaborbernat`.

(adam)