Drop PHP 7.3 support

Author: simPod

.github/workflows/ci.yml

@@ -81,7 +81,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: [7.3, 7.4, 8.0]
+        php: [7.4, 8.0]
         dependencies: ["", --prefer-lowest]
     name: PHP ${{ matrix.php }} Test ${{ matrix.dependencies }}
 

composer.json

@@ -14,7 +14,7 @@
         }
     },
     "require": {
-        "php": "^7.3 || ^8.0",
+        "php": "^7.4 || ^8.0",
         "doctrine/coding-standard": "^9.0"
     },
     "require-dev": {