Update min PHP version to v7.4 (#122)

Co-authored-by: Emanuele Panzeri <[email protected]>
Co-authored-by: Thomas <[email protected]>

Author: 3 people

composer.json

@@ -20,7 +20,7 @@
         }
     ],
     "require": {
-        "php": ">=5.3",
+        "php": "^7.4 || ^8.0",
         "ext-zlib": "*",
         "ext-iconv": "*",
         "ext-mbstring": "*",