www/unit: update from 1.24.0 to 1.25.0.

<ChangeLog>

*) Feature: client IP address replacement from a specified HTTP header

field.

*) Feature: TLS sessions cache.

*) Feature: TLS session tickets.

*) Feature: application restart control.

*) Feature: process and thread lifecycle hooks in Ruby.

*) Bugfix: the router process could crash on TLS connection open when

multiple listeners with TLS certificates were configured; the bug had
appeared in 1.23.0.

*) Bugfix: TLS connections were rejected for configurations with

multiple certificate bundles in a listener if the client did not use
SNI.

*) Bugfix: the router process could crash with frequent mutithreaded

application reconfiguration.

*) Bugfix: compatibility issues with some Python ASGI apps, notably

based on the Starlette framework.

*) Bugfix: a descriptor and memory leak occurred in the router process

when an app process stopped or crashed.

*) Bugfix: the controller or router process could crash if the

configuration contained a full-form IPv6 in a listener address.

*) Bugfix: the router process crashed when a request was passed to an

empty "routes" or "upstreams" using a variable "pass" option.

*) Bugfix: the router process crashed while matching a request to an

empty array of source or destination address patterns.

</ChangeLog>