chore: bump dependencies and release 4.0.0-beta.5

- Bump package.json and bun.lock deps (e.g. @elastic/elasticsearch -> 9.2.0, @fastify/redis -> 7.1.0, @fastify/static -> 8.3.0, commander -> 14.0.2, ioredis -> 5.8.2, nodemailer -> 7.0.10, typescript -> 5.9.3, uWebSockets.js -> v20.55.0, zod -> 4.1.12, plus related lockfile updates)
- fix(controller): guard against missing chain config in IndexerController.connect — reject and clear connectionPromise when config for the chain is not found
- fix(indexer): improve getFirstIndexedBlock to handle empty cat.indices results, add try/catch with error logging and explicit throw, and return earlier when first block is determined

Author: igorls