add php8 support

hello-liang-shan · hello-liang-shan · commit 4add7eefeff8 · 2021-01-27T14:43:16.000+08:00
diff --git a/composer.json b/composer.json
@@ -11,7 +11,7 @@
         }
     ],
     "require": {
-        "php": ">=7.2",
+        "php": ">=7.2|^8.0",
       	"ext-gd": "*",
         "bacon/bacon-qr-code": "^2.0"
     },
