chore(deps): update dependency pylint to v2.7.4

This MR contains the following updates:

Package	Update	Change
pylint (changelog)	patch	==2.7.1 -> ==2.7.4

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Release Notes

PyCQA/pylint

v2.7.4

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=========================== Release date: 2021-03-30

• Fix a problem with disabled msgid not being ignored

  Closes #​4265

• Fix issue with annotated class constants

  Closes #​4264

v2.7.3

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=========================== Release date: 2021-03-29

• Introduce logic for checking deprecated attributes in DeprecationMixin.

• Reduce usage of blacklist/whitelist terminology. Notably, extension-pkg-allow-list is an alternative to extension-pkg-whitelist and the message blacklisted-name is now emitted as disallowed-name. The previous names are accepted to maintain backward compatibility.

• Move deprecated checker to DeprecatedMixin

  Closes #​4086

• Bump astroid version to 2.5.2

• Fix false positive for method-hidden when using private attribute and method

  Closes #​3936

• use-symbolic-message-instead now also works on legacy messages like C0111 (missing-docstring).

• Remove unwanted print to stdout from _emit_no_member

• Introduce a command-line option to specify pyreverse output directory

  Closes #​4159

• Fix issue with Enums and class-attribute-naming-style=snake_case

  Closes #​4149

• Add allowed-redefined-builtins option for fine tuning redefined-builtin check.

  Close #​3263

• Fix issue when executing with python -m pylint

  Closes #​4161

• Exempt typing.TypedDict from too-few-public-methods check.

  Closes #​4180

• Fix false-positive no-member for typed annotations without default value.

  Closes #​3167

• Add --class-const-naming-style for Enum constants and class variables annotated with typing.ClassVar

  Closes #​4181

• Fix astroid.Inference error for undefined-variables with ``len()```

  Closes #​4215

• Fix column index on FIXME warning messages

  Closes #​4218

• Improve handling of assignment expressions, better edge case handling

  Closes #​3763, #​4238

• Improve check if class is subscriptable PEP585

• Fix documentation and filename handling of --import-graph

• Fix false-positive for unused-import on class keyword arguments

  Closes #​3202

• Fix regression with plugins on PYTHONPATH if latter is cwd

  Closes #​4252

v2.7.2

Compare Source

=========================== Release date: 2021-02-28

• Fix False Positive on Enum.__members__.items(), Enum.__members__.values, and Enum.__members__.keys Closes #​4123

• Properly strip dangerous sys.path entries (not just the first one)

  Closes #​3636

• Workflow and packaging improvements

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