Merge pull request #24 from TomA-R/bump_injector

Upgrade bigcommerce/injector from v2 to v3

Author: TomA-R

composer.json

@@ -23,7 +23,7 @@
     "prefer-stable": true,
     "require": {
         "php": "^7.3 || ^8.0",
-        "bigcommerce/injector": "^2.1",
+        "bigcommerce/injector": "^3.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": " ^9.0"
     },