calendar: move St. Hilary of Poitiers to his real date, Jan 14

Confirmed against the raw [Officium] file directly: Jan 14 is Hilary
(Latin/Sancti/01-14.txt), Jan 23 is St. Raymond of Peñafort
(Latin/Sancti/01-23.txt) -- not Hilary at all. The original Jan-23
placement wasn't fabricated, just misled by its own source: 2029 is a
real year where Jan 14 falls on a Sunday and every day through the
22nd is already occupied by another feast, so Hilary genuinely
transfers all the way to the 23rd that one year -- the app had
mistaken that transfer-year artifact for his real, fixed date.

His collect text is unaffected (a feast's collect doesn't change based
on which day it's said), re-confirmed identical on his real date.
Benedictus antiphon pulled fresh, completing January's antiphon pass
(9/9).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/data/propers/common/st-hilary-of-poitiers-collect.yml

@@ -1,7 +1,9 @@
 # Verified against Divinum Officium (Monastic Tridentinum 1617) — read
-# directly from the reference engine's own real-date output (2029-01-23, a
-# year that date doesn't collide with a Sunday). Same convention as
-# data/propers/temporal/*-collect.yml.
+# directly from the reference engine's own real-date output. Originally
+# checked against 2029-01-23 (a transfer-year artifact, see
+# st-hilary-of-poitiers.yml's own corrected note); re-confirmed identical
+# on 2026-01-14, his real fixed date, so the collect text itself was
+# never wrong, only the date this app filed it under.
 id: st-hilary-of-poitiers-collect
 text:
   la: |