Feature freeze timezone change request

I was notified that the tentative feature freeze timestamp is on the
wiki[1] as: April 8, 2026 0:00 UTC-12

I request that the final feature freeze timestamp be set to 0:00 UTC,
not 0:00 UTC-12. The comitfest app currently only supports dates as
the start/end of a commitfest, not datetimes. By using 0:00 UTC I (or
anyone else with admin access) can simply fill in the last day of the
commitfest, and the commitfest will be automatically closed when that
day ends in UTC.

PS. I love that we're not using AoE anymore[2]

[1]: https://wiki.postgresql.org/wiki/PostgreSQL_19_Open_Items
[2]: https://www.postgresql.org/message-id/flat/Z_U0fUvVkXOZmRVV%40momjian.us