[Updated] Install EXT:ns_youtube via Composer

composer.json

@@ -67,7 +67,7 @@
     "t3o/t3org_layout": "@dev",
     "t3o/t3o_donation": "@dev",
     "mabahe/typo3-core-redirects": "^8.7",
-    "nitsan/ns-youtube": "^1.1",
+    "nitsan/ns-youtube": "^1.1"
   },
   "require-dev": {
     "ichhabrecht/filefill": "^2.0"