Update Groovy to latest bugfix release

Author: uschindler

ivy.xml

@@ -40,7 +40,7 @@
     <dependency org="org.gradle" name="gradle-base-services-groovy" rev="&gradle.version;" conf="build"/>
     <dependency org="org.slf4j" name="slf4j-api" rev="1.7.7" conf="build"/>
     <!-- Gradle also needs Groovy, but we need it as build tool, too: -->
-    <dependency org="org.codehaus.groovy" name="groovy-all" rev="2.4.15" conf="build,buildtools"/>
+    <dependency org="org.codehaus.groovy" name="groovy-all" rev="2.4.17" conf="build,buildtools"/>
     <!-- ASM minimal (latest version) required: -->
     <dependency org="org.ow2.asm" name="asm" rev="&asm.version;" conf="build,bundle,buildtools"/>
     <dependency org="org.ow2.asm" name="asm-commons" rev="&asm.version;" conf="build,bundle,buildtools"/>