-- pg_tre 1.1.0 -> 1.1.1 upgrade.
--
-- 1.1.1 is a sparsemap-hardening release.  No on-disk format
-- changes, no SQL surface changes, no AM behavior changes on
-- well-formed indexes.  The vendored sparsemap goes from 2.2.0
-- to 2.3.0, which adds bounds-clamping in the chunk walker, NULL
-- tolerance in sm_contains, and a UBSan-clean fix in the
-- diagnostic path.
--
-- No re-index required.  Existing 1.1.0 indexes work as-is.
-- Nothing to do at the SQL level; the version bump is bookkeeping.