Add missing type arguments

Author: emlun

webauthn-server-attestation/src/main/java/com/yubico/webauthn/attestation/MetadataObject.java

@@ -54,9 +54,9 @@ public final class MetadataObject {
 
     private static final TypeReference<Map<String, String>> MAP_STRING_STRING_TYPE = new TypeReference<Map<String, String>>() {
     };
-    private static final TypeReference LIST_STRING_TYPE = new TypeReference<List<String>>() {
+    private static final TypeReference<List<String>> LIST_STRING_TYPE = new TypeReference<List<String>>() {
     };
-    private static final TypeReference LIST_JSONNODE_TYPE = new TypeReference<List<JsonNode>>() {
+    private static final TypeReference<List<JsonNode>> LIST_JSONNODE_TYPE = new TypeReference<List<JsonNode>>() {
     };
 
     private final transient JsonNode data;