chore: Update dependencies and cleanup code

.gitignore

@@ -2,6 +2,7 @@ config.cfg
 *config.yaml
 !tests/**/config.yaml
 .phpunit.result.cache
+.php-cs-fixer.cache
 vendor/
 composer.phar
 php_errors.log

.php-cs-fixer.php

@@ -24,7 +24,6 @@
 return (new Config())
     ->registerCustomFixers(new Fixers())
     ->setRiskyAllowed(true)
-    ->setUsingCache(false)
     ->setRules([
         '@PSR12' => true,
         '@Symfony' => true,
@@ -43,6 +42,7 @@
         'no_superfluous_phpdoc_tags' => true,
         'no_useless_else' => true,
         'no_useless_return' => true,
+        'nullable_type_declaration_for_default_null_value' => true,
         'operator_linebreak' => ['only_booleans' => true],
         'ordered_class_elements' => true,
         'ordered_imports' => true,

composer.json

@@ -8,7 +8,7 @@
         "ext-curl": "*",
         "dnoegel/php-xdg-base-dir": "~0.1",
         "fakerphp/faker": "^1.21.0",
-        "guzzlehttp/guzzle": "^6.5.2",
+        "guzzlehttp/guzzle": "^7.7.0",
         "laravel-zero/phar-updater": "^1.1",
         "shopwarelabs/plugin-info": "0.1.0",
         "symfony/config": "~5.4",
@@ -19,11 +19,14 @@
     },
     "require-dev": {
         "ext-phar": "*",
-        "friendsofphp/php-cs-fixer": "^3.14.3",
-        "kubawerlos/php-cs-fixer-custom-fixers": "^v3.11.3",
+        "friendsofphp/php-cs-fixer": "^3.17.0",
+        "kubawerlos/php-cs-fixer-custom-fixers": "^v3.14.0",
         "phpunit/phpunit": "^9.5",
         "symfony/var-dumper": "~5.4"
     },
+    "replace": {
+        "symfony/polyfill-php73": "*"
+    },
     "scripts": {
         "cs-check": "php-cs-fixer fix --dry-run -v",
         "cs-fix": "php-cs-fixer fix -v",