Consume Waterline 2.3.1 dashboard and worker UI fixes

[rmcdaniel]

Update

Consume published Waterline 2.3.1 from exact source bd2efba8e2afef590ff87960da6a1cdb41963704 for the dashboard, runtime observation and Ukrainian duration fixes in durable-workflow/waterline#152, #151 and #154.

• The fresh Composer update changes only Waterline and preserves the existing ^2.0 constraint.
• The artifact tuple selects 2.3.1. Published frontend assets are regenerated, including the matching catalog chunk.
• Fresh Laravel HTTP checks pass English, Ukrainian and unsupported-locale fallback, preserving the host locale and application name. Served app.js matches the qualified release bytes.
• Normal source checks, native published-image qualification and promotion are required before this consumer delivery is complete.

No other package or runtime version changes.

[rmcdaniel]

Reviewed the single-package Composer update, exact published reference, matching generated assets and current tuple. The fresh Laravel and browser checks pass. Normal checks and native published-image qualification remain required before delivery.