feat: Added required dev libraries

Author: igorhrcek

composer.json

@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": "^7.0 || ^8.0",
+        "php": "^7.4 || ^8.0",
         "wp-cli/wp-cli": "^2.5"
     },
     "autoload": {
@@ -25,15 +25,20 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5",
+        "guzzlehttp/guzzle": "^7.0",
         "mikey179/vfsstream": "^1.6",
+        "phpunit/phpunit": "^9.5",
+        "vlucas/phpdotenv": "^5.4",
         "wp-cli/entity-command": "^1.3 || ^2",
         "wp-cli/wp-cli-tests": "^3.1"
     },
     "support": {
         "issues": "https://github.com/igorhrcek/wp-cli-secure-command/issues"
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
     }
 }