Bump pylint from 2.11.1 to 2.12.1 in /requirements

[dependabot]

Bumps pylint from 2.11.1 to 2.12.1.

Changelog

Sourced from pylint's changelog.

What's New in Pylint 2.12.1?

Release date: 2021-11-25

• Require Python 3.6.2 to run pylint.

  Closes #5065

What's New in Pylint 2.12.0?

Release date: 2021-11-24

• Upgrade astroid to 2.9.0

  Closes #4982

• Add ability to add end_line and end_column to the --msg-template option. With the standard TextReporter this will add the line and column number of the end of a node to the output of Pylint. If these numbers are unknown, they are represented by an empty string.

• Introduced primer tests and a configuration tests framework. The helper classes available in pylint/testutil/ are still unstable and might be modified in the near future.

  Closes #4412 #5287

• Fix install graphiz message which isn't needed for puml output format.

• MessageTest of the unittest testutil now requires the confidence attribute to match the expected value. If none is provided it is set to UNDEFINED.

• add_message of the unittest testutil now actually handles the col_offset parameter and allows it to be checked against actual output in a test.

• Fix a crash in the check_elif extensions where an undetected if in a comprehension with an if statement within a f-string resulted in an out of range error. The checker no longer relies on counting if statements anymore and uses known if statements locations instead. It should not crash on badly parsed if statements anymore.

• Fix simplify-boolean-expression when condition can be inferred as False.

  Closes #5200

• Fix exception when pyreverse parses property function of a class.

• The functional testutils now accept end_lineno and end_column. Expected output files without these will trigger a DeprecationWarning. Expected output files can be easily updated with the python tests/test_functional.py --update-functional-output command.

... (truncated)

Commits

• 2c15137 Bump pylint to 2.12.1, update changelog
• a9c1017 Require Python 3.6.2 (#5068)
• 1f7f2e9 Add flake8-typing-import to the pre-commit configuration (#5070)
• e4a1935 Activate and fix existing use-set-for-membership checks (#5379)
• 07a635c Upgrade the version to 2.12.1-dev0 following 2.12.0 release
• f6d3d39 Bump pylint to 2.12.0, update changelog
• f84c069 Add Copyrite configuration for Nick Pesce
• aa048f7 Add documentation for primer and convert to command line option (#5387)
• fa7a84f Add min_pyver_end_position option (#5386)
• be149db Update functional test expected output (#5349)
• Additional commits viewable in compare view

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