Timeout Google Cloud Memorystore Redis over TLS (`rediss://`) on port 6378

**Bug Report** Version svix-server 1.67 **Platform** GKE GCP **Description** My issue is: when using Google Cloud Memory Store for Redis, which uses TLS, it automatically exposes port x.x.x.x:6378. **When using:** SVIX_REDIS_DSN : rediss://:abc@x.x.x.x:6378/0?ssl_cert_reqs=none or: SVIX_REDIS_DSN : rediss://:abc@x.x.x.x:6378/0 Svix always times out. Logs: ```+ [ ! -z true ] + WAIT_FOR_ARG=--wait-for 15 + exec svix-server --run-migrations --wait-for 15 thread 'main' panicked at /app/svix-server/src/queue/redis.rs:152:14: Error retrieving connection from Redis pool: TimedOut note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace ``` Connectivity to the instance is confirmed: redis-cli --tls --insecure works from the same container. Expected behavior: Svix should be able to connect to GCP Memory Store Redis TLS endpoint on port 6378. **Actual behavior:** Svix panics due to TimedOut retrieving connection from Redis pool. This blocks usage of GCP Memorystore (TLS mode) with Svix without adding a TLS sidecar/proxy workaround.