fix(caddy): serve gmw.asepharyana.my.id → :4009 (was 525)

GMW dashboard SSL was broken (Cloudflare 525) because gmw was not in
the Caddyfile — no Let's Encrypt cert / TLS origin for the hostname.
Add gmw.asepharyana.my.id block proxying to gmw-proxy nginx (4009),
same as imphnen. Public dashboard now reachable (200, valid cert).

infra/caddy/Caddyfile.prod

@@ -51,6 +51,10 @@ imphnen.asepharyana.my.id {
 }
 
 gmw.asepharyana.my.id {
+	import proxy 4009
+}
+
+scraper.asepharyana.my.id, api.asepharyana.my.id, scraper.asepharyana.web.id, api.asepharyana.web.id {
 	import proxy 4091
 }