Hotfix for database extension version mismatch on first start

Hotfix for v1.8.0. Some self-hosted installs whose database had previously pulled a newer time-series extension via a rolling tag failed on first start because the v1.8.0 image pinned an older extension version. The connection pool refused to load and any service depending on the gateway’s health cascaded into a startup failure.

The pin is now refreshed to a current stable version that ships fallback libraries for the older versions, so both upgrade and downgrade paths are safe. SaaS tenants are unaffected.

Customers who skipped v1.8.0 should upgrade directly to v1.8.1.