Raise pool timeout

Maybe 2 secs is a bit too low for this DigitalOcean setup?
I am not sure this will work...

src/main.rs

@@ -12,7 +12,7 @@ async fn main() -> Result<(), std::io::Error> {
     ));
     let configuration = get_configuration().expect("Failed to read configuration.");
     let connection_pool = PgPoolOptions::new()
-        .acquire_timeout(std::time::Duration::from_secs(2))
+        .acquire_timeout(std::time::Duration::from_secs(15))
         .connect_lazy_with(configuration.database.with_db());
 
     let listener = std::net::TcpListener::bind(format!(