release: 4.0.3 [skip ci]

### [4.0.3](v4.0.2...v4.0.3) (2024-01-18)

#### 🪄 Fixes

* **src:** ensure ephemeral test servers only listen on localhost ([d7774b3](d7774b3))
* **src:** forcefully close all connections after closing test server (fixes [#962](#962)) ([d03ca21](d03ca21))

Author: Xunnamius