Replace `Hbc.load` with `CaskLoader.load`.

Library/Homebrew/cask/lib/hbc.rb

Library/Homebrew/cask/lib/hbc/cask_dependencies.rb

Library/Homebrew/cask/lib/hbc/cli/audit.rb

Library/Homebrew/cask/lib/hbc/cli/fetch.rb

Library/Homebrew/cask/lib/hbc/cli/home.rb

Library/Homebrew/cask/lib/hbc/cli/info.rb

Library/Homebrew/cask/lib/hbc/cli/install.rb

.../Homebrew/cask/lib/hbc/cli/internal_appcast_checkpoint.rb

...omebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb

Library/Homebrew/cask/lib/hbc/cli/internal_checkurl.rb

Library/Homebrew/cask/lib/hbc/cli/internal_dump.rb

Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb

Library/Homebrew/cask/lib/hbc/cli/list.rb

Library/Homebrew/cask/lib/hbc/cli/outdated.rb

Library/Homebrew/cask/lib/hbc/cli/reinstall.rb

Library/Homebrew/cask/lib/hbc/cli/uninstall.rb

Library/Homebrew/cask/lib/hbc/cli/zap.rb

Library/Homebrew/cask/lib/hbc/installer.rb

Library/Homebrew/cask/lib/hbc/scopes.rb

Library/Homebrew/test/cask/audit_spec.rb