chore: drop PHP 7.3 support

kenjis · kenjis · commit 623aa903a8ff · 2023-03-20T09:56:37.000+09:00
diff --git a/composer.json b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=7.3.0",
+        "php": ">=7.4.0",
         "twig/twig": "^3.3.8"
     },
     "require-dev": {
