chore(deps): update dependency pre-commit to v2.20.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pre-commit	==2.19.0 -> ==2.20.0

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Release Notes

pre-commit/pre-commit

v2.20.0

Compare Source

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Features

• Expose source and object-name (positional args) of prepare-commit-msg
  hook as PRE_COMMIT_COMIT_MSG_SOURCE and PRE_COMMIT_COMMIT_OBJECT_NAME.
  • #​2407 PR by @​M-Whitaker.
  • #​2406 issue by @​M-Whitaker.

Fixes

• Fix language: ruby installs when --user-install is set in gemrc.
  • #​2394 PR by @​narpfel.
  • #​2393 issue by @​narpfel.
• Adjust pty setup for solaris.
  • #​2390 PR by @​gaige.
  • #​2389 issue by @​gaige.
• Remove unused --config option from gc, sample-config,
  validate-config, validate-manifest sub-commands.
  • #​2429 PR by @​asottile.

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