Contact information for enabling Sniper SDK
From the README of https://gitlab.steamos.cloud/steamrt/sniper/sdk (emphasis mine):
Native Linux games that require sniper can be released on Steam. The intention is that this will become available as a "self-service" feature via the Steamworks partner web interface, which can be used by any game that benefits from a newer library stack. However, as of early 2024, this mechanism is not yet ready, so configuring a game to run in sniper requires manual setup by a Valve developer. Please contact Valve for more information.
How do I contact Valve about this? The current version of an open-source game I co-maintain doesn't launch on Steam with the upcoming release because it requires a newer libcurl than provided by the old SDK: https://github.com/ddnet/ddnet/issues/7917.