Update version of jarsigner plugin

Author: Ian Craggs

pom.xml

@@ -164,7 +164,7 @@
 				<plugin>
 					<groupId>org.eclipse.cbi.maven.plugins</groupId>
 					<artifactId>eclipse-jarsigner-plugin</artifactId>
-					<version>1.1.4</version>
+					<version>1.1.5</version>
 				</plugin>
 				<plugin>
 					<groupId>org.eclipse.tycho.extras</groupId>