fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGBOUNCYCASTLE-1035561

Author: snyk-bot

pom.xml

@@ -100,7 +100,7 @@
 		<dependency>
 		    <groupId>org.bouncycastle</groupId>
 		    <artifactId>bcpkix-jdk15on</artifactId>
-		    <version>1.60</version>
+		    <version>1.61</version>
 		</dependency>	
   </dependencies>
   <properties>