Reduce deprecations on external package

Author: jaapio

composer.json

@@ -37,6 +37,7 @@
  "ext-iconv": "*",
  "ext-json": "*",
  "ext-mbstring": "*",
+ "cboden/ratchet": "0.4.x@dev",
  "doctrine/deprecations": "^1.1",
  "phpdocumentor/filesystem": "^1.0 || ^1.0@dev",
  "phpdocumentor/flyfinder": "^1.1 || ^2.0",