composer: Use laminas zend to be PHP8 compatible

* Also changed some function usages for PHP8 compat

Author: rmp-up

composer.json

@@ -12,9 +12,9 @@
     "ext-simplexml": "*",
     "league/commonmark": "^0.18.1",
     "michelf/php-markdown": ">=1.0 <2.0.0",
-    "zendframework/zend-code": ">=3.0 <4.0.0",
+    "laminas/laminas-code": ">=3.0 <4.0.0",
     "phpdocumentor/reflection-docblock": "4.3.* || 5.*",
     "mikey179/vfsstream": "^1.6",
-    "gherkins/regexpbuilderphp": "^0.8.0"
+    "gherkins/regexpbuilderphp": "0.7.* || 0.8.*"
   }
-}
+}

lib/Comment.php

@@ -105,7 +105,7 @@ public function markdown(): string
 
         $description = $this->docBlock()->getDescription();
         // Unescape possibly escaped comment blocks
-        $description = preg_replace('@(\s*)\*\\\/(\s*)$@m', '\1*/', $description);
+        $description = preg_replace('@(\s*)\*\\\/(\s*)$@m', '\1*/', (string) $description);
 
         $markdown .= $description;
 
@@ -132,4 +132,4 @@ public function xpath(string $xpath, int $index = null)
 
         return $elements[$index];
     }
-}
+}