chore(embeddings): add migrations to github actions trigger path

.github/workflows/search.yml

@@ -6,9 +6,10 @@ on:
       - master
       - feat/zero-downtime-embeddings-refresh
     paths:
+      - '.github/workflows/search.yml'
+      - 'supabase/migrations/**'
       - 'apps/docs/**'
       - 'spec/**'
-      - '.github/workflows/search.yml'
   workflow_dispatch:
 
 jobs: