Add PHP 8.3 to test matrix (#245)

* Add PHP 8.3 to test matrix
* Update psalm for 8.3 to work
* Update psalm suppressions
* Fix php-cs-fixer issue

Author: agoallikmaa

composer.json

@@ -25,10 +25,10 @@
     "php-http/mock-client": "*",
     "phpstan/phpstan": "^1.1",
     "phpstan/phpstan-phpunit": "^1.0",
-    "psalm/plugin-phpunit": "^0.16",
+    "psalm/plugin-phpunit": "^0.18.4",
     "open-telemetry/sdk": "^1.0",
     "phpunit/phpunit": "^9.5",
-    "vimeo/psalm": "^4.0",
+    "vimeo/psalm": "^5.0",
     "symfony/http-client": "^5.4||^6.0",
     "symfony/messenger": "^5.4||^6.0",
     "open-telemetry/opentelemetry-propagation-traceresponse": "*",

src/RequestPropagationGetter.php

@@ -20,12 +20,12 @@ public static function instance(): self
         return $instance ??= new self();
     }
 
-    /** @psalm-suppress InvalidReturnType */
+    /** @psalm-suppress MoreSpecificReturnType */
     public function keys($carrier): array
     {
         assert($carrier instanceof Request);
 
-        /** @psalm-suppress InvalidReturnStatement */
+        /** @psalm-suppress LessSpecificReturnStatement */
         return $carrier->headers->keys();
     }