raise minimum PHP version to 8.1 and add 8.4

Author: mmoll

.github/workflows/ci.yml

@@ -40,13 +40,10 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         php_version:
-          - 7.2
-          - 7.3
-          - 7.4
-          - 8.0
           - 8.1
           - 8.2
           - 8.3
+          - 8.4
         dependencies_level:
           - --prefer-lowest
           - ""

composer.json

@@ -23,7 +23,7 @@
         "source": "https://github.com/mayflower/mo4-coding-standard"
     },
     "require": {
-        "php": "~7.2 || ~8.0",
+        "php": "~8.1",
         "dealerdirect/phpcodesniffer-composer-installer": "~0.7 || ~1.0",
         "escapestudios/symfony2-coding-standard": "^3.10.0",
         "slevomat/coding-standard": "^8.14",