6.17.3

What's Changed

• optim pay apiv2 specials, method signatures and phpstan@^2 by @TheNorthMemory in #2885
• drop unused PHPDoc @throws tag from __construct by @TheNorthMemory in #2886
• optim the pay client and server on APIv2 specials, ref efedd21 by @TheNorthMemory in #2888

Full Changelog: 6.17.2...6.17.3