chore: bump appwrite/base to 2.2.10 (Swoole 6.2.5) - #18

The new base-image tag is available for both amd64 and arm64, and no issues were found in this one-line update.

Updates the final Docker build stage to use appwrite/base:2.2.10 instead of 2.2.9. This picks up the newer base image containing Swoole 6.2.5.