1.22.0

Enhancements

• Add Xcode 14.0 object version support.
  florianhieger
  #884

• Bump Xcode version to match Xcode 13
  Eric Firestone
  #857

• Bump Xcode version constants for Xcode 12.5.
  Dimitris Koutsogiorgas
  #856

• Add platform_filters support for PBXTargetDependency.
  Max Langer
  #853

• Add dependency_file support for PBXBuildRule.
  Zachary Waldowski
  #862

• Remove build files when underlying file_ref is removed.
  Ben Yohay
  #861

• Add code_coverage_targets support for TestAction.
  Joey Dong
  #874

• Reword misleading warning diagnostic for the --project option.
  lemonspike
  #709

• Do not raise an exception on a Swift Package dependency.
  Vincent Isambart
  #743

Bug Fixes

• Fix undefined method 'downcase' for nil
  LWX124
  #865