Update timestamp value in test

src/JonnyW/PhantomJs/Tests/Integration/ClientTest.php

@@ -385,7 +385,7 @@ EOF;
         $this->assertEquals(array(
             'domain' => '.jonnyw.kiwi',
             'expires' => 'Mon, 16 Nov 2020 00:00:00 GMT',
-            'expiry' => '1605481200',
+            'expiry' => '1605477600',
             'httponly' => true,
             'name' => 'test_cookie',
             'path' => '/',