Shopware has switched to .env.local (#3810)

Shopware has switched to `.env.local` for modifications, whereas the `.env` provides sane defaults.

Author: UlrichThomasGabor

recipe/shopware.php

@@ -35,7 +35,7 @@
 
 // These files are shared among all releases.
 set('shared_files', [
-    '.env',
+    '.env.local',
     'install.lock',
     'public/.htaccess',
     'public/.user.ini',