Add guava to pom

Author: JamesPeck

pic-sure-auth-services/pom.xml

@@ -156,6 +156,11 @@
 			<artifactId>javax.mail-api</artifactId>
 			<version>1.6.2</version>
 		</dependency>
+		<dependency>
+			<groupId>com.google.guava</groupId>
+			<artifactId>guava</artifactId>
+			<version>33.0.0-jre</version>
+		</dependency>
 
 		<!-- swagger -->
 		<dependency>