[Git] Ignore custom-themes.js in SOGo

.gitignore

@@ -39,6 +39,7 @@ data/conf/postfix/sql
 data/conf/rspamd/custom/*
 data/conf/rspamd/local.d/*
 data/conf/rspamd/override.d/*
+data/conf/sogo/custom-theme.js
 data/conf/sogo/plist_ldap
 data/conf/sogo/sieve.creds
 data/conf/sogo/sogo-full.svg