Updated P4*.json release list files (release process Step 7, major releases only).
Refreshed from updates.perforce.com -- newer build available for the
current release line (build 2797379 -> 2873834) across P4, P4D,
P4Broker, and P4Proxy.
Agent: Claude Code, Model: Claude Sonnet 5 (claude-sonnet-5), operating as bot_Claude_Anthropic.