Re-add .env to Node.gitignore

Author: noinkling

Node.gitignore

@@ -72,7 +72,8 @@ web_modules/
 # Yarn Integrity file
 .yarn-integrity
 
-# dotenv environment variables file
+# dotenv environment variable files
+.env
 .env.development.local
 .env.test.local
 .env.production.local