Merge pull request #144 from gsteel/drop-php-8.0

Drop support for PHP 8.0

composer.json

@@ -10,7 +10,7 @@
     "config": {
         "sort-packages": true,
         "platform": {
-            "php": "8.0.99"
+            "php": "8.1.99"
         },
         "allow-plugins": {
             "dealerdirect/phpcodesniffer-composer-installer": true,
@@ -22,7 +22,7 @@
         "wildbit/postmark-php": "4.0.2"
     },
     "require": {
-        "php": "~8.0 || ~8.1 || ~8.2",
+        "php": "~8.1 || ~8.2",
         "ext-json": "*",
         "fig/http-message-util": "^1.1",
         "php-http/discovery": "^1.14.3",
@@ -38,7 +38,7 @@
         "phpunit/phpunit": "^9.6.5",
         "psalm/plugin-phpunit": "^0.18.4",
         "squizlabs/php_codesniffer": "^3.7.2",
-        "symfony/options-resolver": "^5.3.7 || ^6.0.19",
+        "symfony/options-resolver": "^5.3.7 || ^6.2.7",
         "vimeo/psalm": "^5.8.0"
     },
     "autoload": {