update dependencies

Author: Mateusz Lopacinski

composer.json

@@ -14,7 +14,7 @@
     "psr/cache": "^3.0",
     "psr/http-message": "^1.0",
     "psr/log": "^1.1",
-    "guzzlehttp/guzzle": "^7.3",
+    "guzzlehttp/guzzle": "^7.4",
     "ext-json": "*"
   },
   "require-dev": {