Bump setuptools from 42.0.2 to 45.2.0 in /docker/build_scripts

[dependabot-preview]

Bumps setuptools from 42.0.2 to 45.2.0.

Changelog

Sourced from setuptools's changelog.

v45.2.0

• #1905: Fixed defect in _imp, introduced in 41.6.0 when the 'tests' directory is not present.

• #1941: Improve editable installs with PEP 518 build isolation:

  • The --user option is now always available. A warning is issued if the user site directory is not available.

  * The error shown when the install directory is not in PYTHONPATH has been turned into a warning.

• #1981: Setuptools now declares its tests and docs dependencies in metadata (extras).

• #1985: Add support for installing scripts in environments where bdist_wininst is missing (i.e. Python 3.9).

• #1968: Add flake8-2020 to check for misuse of sys.version or sys.version_info.

v45.1.0

• #1458: Add minimum sunset date and preamble to Python 2 warning.
• #1704: Set sys.argv[0] in setup script run by build_meta.__legacy__
• #1974: Add Python 3 Only Trove Classifier and remove universal wheel declaration for more complete transition from Python 2.

v45.0.0

• #1458: Drop support for Python 2. Setuptools now requires Python 3.5 or later. Install setuptools using pip >=9 or pin to Setuptools <45 to maintain 2.7 support.
• #1959: Fix for Python 4: replace unsafe six.PY3 with six.PY2

v44.0.0

• #1908: Drop support for Python 3.4.

v43.0.0

• #1634: Include pyproject.toml in source distribution by default. Projects relying on the previous behavior where pyproject.toml was excluded by default should stop relying on that behavior or add exclude pyproject.toml to their MANIFEST.in file.
• #1927: Setuptools once again declares 'setuptools' in the build-system.requires and adds PEP 517 build support by declaring itself as the build-backend. It additionally specifies build-system.backend-path to rely on itself for those builders that support it.

Commits

• a5dec2f Bump version: 45.1.0 → 45.2.0
• 757deb1 Merge pull request #1941 from joreiff/pr-easyinstall
• 5d17586 Merge pull request #1986 from vstinner/skip_wininst
• b0ecd44 Update changelog.
• 54b76e6 Merge pull request #1981 from pypa/feature/deps-in-metadata
• 91ede46 Add changelog entry.
• 60da370 Fix install_scripts() if bdist_wininst is missing
• 6ee1a1c Merge branch 'master' into pr-easyinstall
• 641e088 Move docs dependencies into package metadata and use same technique as jaraco...
• b2845ed Merge remote-tracking branch 'origin/master' into feature/deps-in-metadata
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #490.