Merge branch 'release/5.5.4'

Author: ssfinney

composer.json

@@ -17,7 +17,7 @@
     "require": {
         "php": ">=7.2",
         "ext-json": "*",
-        "guzzlehttp/guzzle": "^6.2",
+        "guzzlehttp/guzzle": "^6.2|^7.0",
         "illuminate/support": "~5.5|~6|~7|~8",
         "nesbot/carbon": "~1.2|^2"
     },