Add support for PHP 8.3.

Author: ivopetkov

composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "7.1.*|7.2.*|7.3.*|7.4.*|8.0.*|8.1.*|8.2.*"
+        "php": "7.1.*|7.2.*|7.3.*|7.4.*|8.0.*|8.1.*|8.2.*|8.3.*"
     },
     "require-dev": {
         "ivopetkov/docs-generator": "1.*"

phpunit.xml

@@ -1,6 +1,6 @@
 <phpunit bootstrap="vendor/autoload.php">
     <testsuites>
-        <testsuite name="">
+        <testsuite name="Tests">
             <directory>./tests/</directory>
         </testsuite>
     </testsuites>