Bump karaf version to 4.2.5

Change-Id: Ib03f6f11e923f38f6d9a2a36f170f17addbbb290
diff --git a/tools/build/bazel/osgi_features.bzl b/tools/build/bazel/osgi_features.bzl
index b5eb2a5..5f1c8d6 100644
--- a/tools/build/bazel/osgi_features.bzl
+++ b/tools/build/bazel/osgi_features.bzl
@@ -102,7 +102,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <features xmlns="http://karaf.apache.org/xmlns/features/v1.2.0"
           name="onos-%s">
-    <repository>mvn:org.apache.karaf.features/standard/4.2.3/xml/features</repository>
+    <repository>mvn:org.apache.karaf.features/standard/4.2.5/xml/features</repository>
 ''' % ONOS_VERSION
 
 FEATURES_FOOTER = "</features>"