[webkit-changes] [WebKit/WebKit] 71ab75: [Merge-Queue] Validate a committer added merge label

[Brianna Fan]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 71ab7597d8b49a51a82b4088421bf4833bee5330
      https://github.com/WebKit/WebKit/commit/71ab7597d8b49a51a82b4088421bf4833bee5330
  Author: Brianna <brianna.fan at gmail.com>
  Date:   2023-09-13 (Wed, 13 Sep 2023)

  Changed paths:
    M Tools/CISupport/ews-build/factories.py
    M Tools/CISupport/ews-build/factories_unittest.py
    M Tools/CISupport/ews-build/steps.py
    M Tools/CISupport/ews-build/steps_unittest.py

  Log Message:
  -----------
  [Merge-Queue] Validate a committer added merge label
https://bugs.webkit.org/show_bug.cgi?id=261478
rdar://115388421

Reviewed by Jonathan Bedard.

Adds DetermineLabelOwner step that pulls latest label author from GitHub.

Canonical link: https://commits.webkit.org/267959@main