doorpost: move the pin for the indexed middot (02b562ec…)

f6651425 rewrote binyan_av.pl, gezerah_shavah.pl and shnei_ketuvim.pl
— all three Doorpost files — without moving @expected_hash: the slip
of tablet 54, made again, and this time caught by
scripts/doorpost_check.py in build_and_push before any image was built
(main carried the drift for eleven minutes; no pod ever did). The pin
moves to the indexed middot's hash. doorpost_test, anchors_test,
sugya_test 41/0.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

vav_pipeline/lib/vav_pipeline/doorpost.ex

@@ -182,7 +182,7 @@ defmodule VavPipeline.Doorpost do
   # changes; the update is a deliberate operator commit. A bare
   # hash-update commit (without a corresponding spec change in the
   # same commit) is itself a drift signal.
-  @expected_hash "7eac65cfadccc37e600a779fc89acef0a24a9eac35e5ab18e8ec845cc1f104c2"
+  @expected_hash "02b562ecd0c8f0db20a1afe41504b2c30e2b1b12692cfbdf9cae86096de3bc7b"
 
   @doc "Return the list of files that constitute the category-grade specification."
   @spec files() :: [String.t()]