Update valid-config with actually valid values

valid-config.edn

@@ -1,9 +1,9 @@
 {
 :default-app-name "Meissas awesome gitea"
-:fqdn "$fqdn"
-:issuer "$letsencrypt_endpoint"
-:mailer-from "$mailer_from"
-:mailer-host-port "$mailer_host_port"
-:service-whitelist-domains "$service_whitelist_domains"
-:service-noreply-address "$service_noreply_address"
+:fqdn "test.de"
+:issuer "staging"
+:mailer-from "test@test.de"
+:mailer-host-port "123"
+:service-whitelist-domains "test.de"
+:service-noreply-address "noreply@test.de"
  }