mail/snappymail: Update to 2.35.3
- Add security/pecl-xxtea to RUN_DEPENDS.
- Replace REDIS_RUN_DEPENDS with REDIS_USE.
ChangLog: https://github.com/the-djmaze/snappymail/releases/tag/v2.35.3
MFH: 2024Q1
(cherry picked from commit ff343ebc0123a7bc37bdfc6f0f34b4375edc5197)