Update codebase to PHP 7.4 (#12)

Author: TavoNiievez

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [5.6, 7.0, 7.1, 7.2, 7.3, 7.4, 8.0]
+        php: [7.4, 8.0, 8.1]
 
     steps:
     - name: Checkout code

composer.json

@@ -1,28 +1,30 @@
 {
-    "name":"codeception/module-amqp",
-    "description":"AMQP module for Codeception",
-    "keywords":["codeception", "amqp"],
-    "homepage":"http://codeception.com/",
-    "type":"library",
-    "license":"MIT",
-    "authors":[
-        {
-            "name":"Michael Bodnarchuk"
-        },
-        {
-            "name":"Gintautas Miselis"
-        }
-    ],
-    "minimum-stability": "RC",
-    "require": {
-        "php": ">=5.6.0 <9.0",
-        "codeception/codeception": "^4.0",
-        "php-amqplib/php-amqplib": "^2.10|^3.0"
-    },
-    "autoload":{
-        "classmap": ["src/"]
-    },
-    "config": {
-        "classmap-authoritative": true
-    }
+	"name": "codeception/module-amqp",
+	"description": "AMQP module for Codeception",
+	"keywords": [ "codeception", "amqp" ],
+	"homepage": "https://codeception.com/",
+	"type": "library",
+	"license": "MIT",
+	"authors": [
+		{
+			"name": "Michael Bodnarchuk"
+		},
+		{
+			"name": "Gintautas Miselis"
+		}
+	],
+	"minimum-stability": "RC",
+	"require": {
+		"php": "^7.4 | ^8.0",
+		"codeception/codeception": "^4.0",
+		"php-amqplib/php-amqplib": "^2.10 | ^3.0"
+	},
+	"autoload": {
+		"classmap": [
+			"src/"
+		]
+	},
+	"config": {
+		"classmap-authoritative": true
+	}
 }

readme.md

@@ -7,6 +7,10 @@ An AMQP module for Codeception.
 [![Total Downloads](https://poser.pugx.org/codeception/module-amqp/downloads)](https://packagist.org/packages/codeception/module-amqp)
 [![License](https://poser.pugx.org/codeception/module-amqp/license)](/LICENSE)
 
+## Requirements
+
+* `PHP 7.4` or higher.
+
 ## Installation
 
 ```