Update dependency flake8-builtins to v2

This MR contains the following updates:

Package	Type	Update	Change
flake8-builtins (changelog)	dev-dependencies	major	^1.4.1 -> ^2.0.0

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Release Notes

gforcada/flake8-builtins

v2.5.0

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• Support detecting a shadowing folder as module name (as part of A005). [asfaltboy]

v2.4.0

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• Add rule for lambda argument shadowing (A006). [cielavenir]

v2.3.0

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• Add rule for builtin module name shadowing (A005). [asfaltboy]

v2.2.0

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• Use tox and pre-commit to ease project maintenance. [gforcada]

v2.1.0

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• Honor --builtins option from flake8 #​73. [gforcada]

v2.0.1

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• Add official support for python 3.10 and 3.11. [gforcada] [michael-k]

• Update options handling. [gforcada]

• Simplify testing. [gforcada]

v2.0.0

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• Mark support for python 3.9. [lovetoburnswhen]

• Replace travis for GitHub. [cclauss]

• Fix CI badge. [sobolevn]

• Make black and isort mandatory. [cclauss]

• Drop python 2.7 and 3.6. [gforcada]

• Overhaul GitHub actions to test on actual supported python versions. [gforcada]

• New flake8 option --builtins-ignorelist to specify a list of builtins to ignore. [gsingh93]

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