chore(deps): bump postgrest/postgrest in /pkg/config/templates

Bumps postgrest/postgrest from v12.2.12 to v13.0.4.

---
updated-dependencies:
- dependency-name: postgrest/postgrest
  dependency-version: v13.0.4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pkg/config/templates/Dockerfile

@@ -3,7 +3,7 @@ FROM supabase/postgres:17.4.1.055 AS pg
 # Append to ServiceImages when adding new dependencies below
 FROM library/kong:2.8.1 AS kong
 FROM axllent/mailpit:v1.22.3 AS mailpit
-FROM postgrest/postgrest:v12.2.12 AS postgrest
+FROM postgrest/postgrest:v13.0.4 AS postgrest
 FROM supabase/postgres-meta:v0.91.0 AS pgmeta
 FROM supabase/studio:2025.07.07-sha-1d3b0ba AS studio
 FROM darthsim/imgproxy:v3.8.0 AS imgproxy