chore(ci): remove paths filter from migration dry-run (#8)

Ensures the dry-run job always produces a check result so it can be
used as a required status check in the branch ruleset.

Co-authored-by: Ona <no-reply@ona.com>

Author: zacharias-ona

.github/workflows/deploy-migrations.yml

@@ -5,8 +5,6 @@ on:
     branches: [main]
   pull_request:
     branches: [main]
-    paths:
-      - supabase/migrations/**
   workflow_dispatch:
 
 env: