Update eclipse-jarsigner-plugin to 1.1.7

Change-Id: I6ac33e662aac68a01455113d8abbe0bcdd725ca2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.packaging/pom.xml

@@ -294,7 +294,7 @@
         <plugin>
           <groupId>org.eclipse.cbi.maven.plugins</groupId>
           <artifactId>eclipse-jarsigner-plugin</artifactId>
-          <version>1.1.5</version>
+          <version>1.1.7</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>