Release 33.4.0

• ✨ Export TimezoneOffsetRE, parseTimezoneOffsetMatch, parseTimezoneOffsetToMinutes, and TimezoneOffsetMatch type for composable timezone parsing
• ✨ normalizeZone now accepts numeric offset minutes (e.g., 480 → UTC+8)
• ✨ isUTC now recognizes additional variants: "0", "Etc/UTC", "-00", "-00:00", "+00"
• 🐞 isZone now only returns true for valid zones

Commits

• feat(changelog): add v33.4.0 release notes for timezone parsing enhancements (e526ddd)
• feat(timezones): add additional timezone type exports for improved handling (4cbb705)
• feat(timezones): enhance timezone handling. DRY up several functions, export new parsing functions, and add tests (05c4aef)
• chore(fmt) (8e1a7b5)
• chore(local settings): add allowed jobs and cspell (6abdf69)
• feat(docs): add TDD and Simple Design guidelines for exiftool-vendored (4095965)
• chore(dependencies): update chai, rimraf, and typescript-eslint to latest versions (9f1136a)
• feat(docker): update Node.js version in installation guide from 18 to 24 (3afd76f)
• chore(dependabot): change update schedule from weekly to monthly for GitHub Actions and npm (f459e4d)