Update jenkins to 2.60.2

Change-Id: I2494e4bab3edaaaf0b5d03077b5eb815e2994a14
diff --git a/WORKSPACE b/WORKSPACE
index 16fa68e..c30fe7c 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -52,7 +52,7 @@
 jenkins_base(
     name = "jenkins",
     plugins = JENKINS_PLUGINS,
-    version = "2.46.2",
+    version = "2.60.2",
     volumes = ["/opt/secrets"],
 )