hydra: bayfront: Increase bordeaux nar cache max size.

As bayfront has more space now.

* hydra/bayfront.scm (%bayfront-nginx-service-extra-config): Increase
bordeaux nar cache max_size.

hydra/bayfront.scm

@@ -261,7 +261,7 @@ proxy_cache_path /var/cache/nginx/bordeaux/nar
                  levels=2
                  inactive=28d          # inactive keys removed after 28d
                  keys_zone=bordeaux-nar:64m
-                 max_size=128g;       # total cache data size max
+                 max_size=1024g;       # total cache data size max
 "))
 
 (define %common-tls-options