v1.2.2

What's Changed

• docs: document the web service and Docker image in README by @bariskayadelen in #7
• Never grow images during conversion (keep-smaller + quality-aware + grayscale) by @bariskayadelen in #8
• ci: bump actions/checkout v4 -> v5 by @bariskayadelen in #9
• chore: refresh dependencies; tower-http 0.6 -> 0.7 by @bariskayadelen in #10
• Release v1.2.2: size-safe image conversion + dependency refresh by @bariskayadelen in #11

Full Changelog: v1.2.1...v1.2.2