Bump zeitwerk from 2.6.9 to 2.6.13

[dependabot[bot]]

Bumps zeitwerk from 2.6.9 to 2.6.13.

Changelog

Sourced from zeitwerk's changelog.

2.6.13 (6 february 2024)

• There is a new experimental null inflector that simply returns its input unchanged:

  loader.inflector = Zeitwerk::NullInflector.new
  

  Projects using this inflector are expected to define their constants in files and directories with names exactly matching them:

  User.rb       -> User
  HTMLParser.rb -> HTMLParser
  Admin/Role.rb -> Admin::Role
  

  Please see its documentation for further details.

• Documentation improvements.

2.6.12 (25 September 2023)

• Maintenance release with some internal polishing.

2.6.11 (2 August 2023)

• Let on_load callbacks for implicit namespaces autoload other implicit namespaces.

2.6.10 (30 July 2023)

• Improve validation of the values returned by the inflector's camelize.

Commits

• 0b6477f Ready for 2.6.13
• 0c20583 Document null inflector and case-insensitive file systems
• 0f006a8 Add test coverage for symlinks and for_gem
• 798ccdb Merge pull request #286 from m-nakamura145/update-actions-checkout
• f3cca26 Bump actions/checkout
• 7daca61 Revise the conceptual translation of for_gem
• 94e83ee Delete comment in Kernel#require decoration
• a7201b3 Merge pull request #279 from stevenharman/typo_and_doc_tweeks
• ff13527 Fix small typo & clarify some grammar in the docs
• b82324b Merge pull request #278 from m-nakamura145/update-ci-matrix
• Additional commits viewable in compare view

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[seanhandley]

@dependabot rebase