fix:ld-signature updated to new version

Author: Mohamed Sameem Ahamed Azeem

pom.xml

@@ -130,7 +130,7 @@
 		<dependency>
 			<groupId>info.weboftrust</groupId>
 			<artifactId>ld-signatures-java</artifactId>
-			<version>0.2.0</version>
+			<version>0.2.1</version>
 		</dependency>
 		<dependency>
 			<groupId>com.nimbusds</groupId>