Apply PHPStan fixes

Author: dantleech

src/TextUI/Configuration/SourceFilter.php

@@ -9,6 +9,7 @@
  */
 namespace PHPUnit\TextUI\Configuration;
 
+use PHPUnit\Util\FileMatcherPattern;
 use function array_map;
 use PHPUnit\Util\FileMatcher;
 use PHPUnit\Util\FileMatcherRegex;
@@ -52,11 +53,11 @@ public function __construct(Source $source)
         $this->source                  = $source;
         $this->includeDirectoryRegexes = array_map(static function (FilterDirectory $directory)
         {
-            return FileMatcher::toRegEx($directory->path());
+            return FileMatcher::toRegEx(new FileMatcherPattern($directory->path()));
         }, $source->includeDirectories()->asArray());
         $this->excludeDirectoryRegexes = array_map(static function (FilterDirectory $directory)
         {
-            return FileMatcher::toRegEx($directory->path());
+            return FileMatcher::toRegEx(new FileMatcherPattern($directory->path()));
         }, $source->excludeDirectories()->asArray());
     }
 

src/Util/FileMatcherPattern.php

@@ -9,7 +9,7 @@
  */
 namespace PHPUnit\Util;
 
-class FileMatcherPattern
+final class FileMatcherPattern
 {
     public function __construct(public string $path)
     {