upgraded to PHP 8.3

Author: grossmannmartin

.github/workflows/run-checks-tests.yaml

@@ -15,7 +15,7 @@ jobs:
             -   name: Install PHP, extensions and tools
                 uses: shivammathur/setup-php@v2
                 with:
-                    php-version: '8.1'
+                    php-version: '8.3'
                     extensions: bcmath, gd, intl, pdo_pgsql, redis, pgsql, zip
                     tools: composer
             -   name: Install Composer dependencies

composer.json

@@ -20,7 +20,7 @@
         }
     },
     "require": {
-        "php": "^8.1",
+        "php": "^8.3",
         "ext-bcmath": "*",
         "ext-ctype": "*",
         "ext-curl": "*",