Bump virtualenv from 20.0.31 to 20.3.0

[dependabot]

Bumps virtualenv from 20.0.31 to 20.3.0.

Changelog

Sourced from virtualenv's changelog.

v20.3.0 (2021-01-10)

Features - 20.3.0

- The builtin discovery takes now a ``--try-first-with`` argument and is first attempted as valid interpreters. One can
  use this to force discovery of a given python executable when the discovery order/mechanism raises errors -
  by :user:`gaborbernat`. (`[#2046](https://github.com/pypa/virtualenv/issues/2046) <https://github.com/pypa/virtualenv/issues/2046>`_)
Bugfixes - 20.3.0

• On Windows python 3.7+ distributions where the exe shim is missing fallback to the old ways - by :user:gaborbernat. ([#1986](https://github.com/pypa/virtualenv/issues/1986) <https://github.com/pypa/virtualenv/issues/1986>_)
• When discovering interpreters on Windows, via the PEP-514, prefer PythonCore releases over other ones. virtualenv is used via pip mostly by this distribution, so prefer it over other such as conda - by :user:gaborbernat. ([#2046](https://github.com/pypa/virtualenv/issues/2046) <https://github.com/pypa/virtualenv/issues/2046>_)

v20.2.2 (2020-12-07)

Bugfixes - 20.2.2

- Bump pip to ``20.3.1``, setuptools to ``51.0.0`` and wheel to ``0.36.1`` - by :user:`gaborbernat`. (`[#2029](https://github.com/pypa/virtualenv/issues/2029) <https://github.com/pypa/virtualenv/issues/2029>`_)
v20.2.1 (2020-11-23)
No significant changes.
v20.2.0 (2020-11-21)
Features - 20.2.0

• Optionally skip VCS ignore directive for entire virtualenv directory, using option :option:no-vcs-ignore, by default False. ([#2003](https://github.com/pypa/virtualenv/issues/2003) <https://github.com/pypa/virtualenv/issues/2003>_)

• Add --read-only-app-data option to allow for creation based on an existing app data cache which is non-writable. This may be useful (for example) to produce a docker image where the app-data is pre-populated.

  .. code-block:: dockerfile

  ENV \
      VIRTUALENV_OVERRIDE_APP_DATA=/opt/virtualenv/cache \
      VIRTUALENV_SYMLINK_APP_DATA=1
  RUN virtualenv venv && rm -rf venv
  ENV VIRTUALENV_READ_ONLY_APP_DATA=1
  USER nobody
  # this virtualenv has symlinks into the read-only app-data cache
  RUN virtualenv /tmp/venv
  

... (truncated)

Commits

• a4025d6 release 20.3.0
• 684a632 Improve discovery on Windows and provide escape hatchet (#2046)
• 9201a75 [pre-commit.ci] pre-commit autoupdate (#2045)
• 36fba76 Remove xdist (#2043)
• bc787b2 Try to fix the CI (#2041)
• 838bfbc [pre-commit.ci] pre-commit autoupdate (#2042)
• 1b8144f Checkout entire branch, not just last commit
• 287629a Add 3.9 to doc list of cpython versions (#2033)
• 8b8a249 Merge pull request #2030 from pypa/release-20.2.2
• b4607d1 release 20.2.2
• Additional commits viewable in compare view

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[dependabot]

Superseded by #35.