Version 0.84

Released November 3, 2025

• Update Spain holidays in 2008-2009, 2026 (#3026 by @PPsyrius)
• Update Sri Lanka holidays in 2026 (#3033 by @PPsyrius)
• Add ChristianHolidays::_add_saint_martins_day method (#3023 by @PPsyrius)
• Drop Python 3.9 support (#2998 by @PPsyrius)
• Standardize th l10n for "{insert} Anniversary of...." (#3027 by @PPsyrius)

Full Changelog: v0.83...v0.84