Applied fixes from StyleCI

src/Object/DownloadedJWKSet.php

@@ -10,6 +10,7 @@
  */
 
 namespace Jose\Object;
+
 use Assert\Assertion;
 use Psr\Cache\CacheItemPoolInterface;
 

src/Object/JKUJWKSet.php

@@ -13,9 +13,8 @@
 
 use Assert\Assertion;
 
-
 /**
- * Class JKUJWKSet
+ * Class JKUJWKSet.
  */
 final class JKUJWKSet extends DownloadedJWKSet
 {

src/Object/X5UJWKSet.php

@@ -14,9 +14,8 @@
 use Assert\Assertion;
 use Jose\KeyConverter\KeyConverter;
 
-
 /**
- * Class JKUJWKSet
+ * Class JKUJWKSet.
  */
 final class X5UJWKSet extends DownloadedJWKSet
 {