use more entropy with uniqid()

Author: xabbuh

Tests/CacheWarmer/AnnotationsCacheWarmerTest.php

@@ -28,7 +28,7 @@ class AnnotationsCacheWarmerTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->cacheDir = sys_get_temp_dir().'/'.uniqid();
+        $this->cacheDir = sys_get_temp_dir().'/'.uniqid('', true);
         $fs = new Filesystem();
         $fs->mkdir($this->cacheDir);
         parent::setUp();

Tests/CacheWarmer/ConfigBuilderCacheWarmerTest.php

@@ -36,7 +36,7 @@ class ConfigBuilderCacheWarmerTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->varDir = sys_get_temp_dir().'/'.uniqid();
+        $this->varDir = sys_get_temp_dir().'/'.uniqid('', true);
         $fs = new Filesystem();
         $fs->mkdir($this->varDir);
     }