chore: update keepalive timestamp [skip ci]

actions-user · actions-user · commit 88c672e3bd3b · 2026-01-01T00:30:33.000Z
diff --git a/.github/keepalive b/.github/keepalive
@@ -1 +1 @@
-Last keepalive: Mon Dec  1 00:31:35 UTC 2025
+Last keepalive: Thu Jan  1 00:30:33 UTC 2026
