Merge pull request #4339 from mboersma/update-buildpacks

Update buildpacks

Author: mboersma

builder/rootfs/usr/local/src/slugbuilder/builder/install-buildpacks

@@ -29,14 +29,14 @@ download_buildpack() {
 mkdir -p $BUILDPACK_INSTALL_PATH
 
 download_buildpack https://github.com/heroku/heroku-buildpack-multi.git          26fa21a
-download_buildpack https://github.com/heroku/heroku-buildpack-ruby.git           v137
-download_buildpack https://github.com/heroku/heroku-buildpack-nodejs.git         v75
-download_buildpack https://github.com/heroku/heroku-buildpack-java.git           v38
+download_buildpack https://github.com/heroku/heroku-buildpack-ruby.git           v138
+download_buildpack https://github.com/heroku/heroku-buildpack-nodejs.git         v80
+download_buildpack https://github.com/heroku/heroku-buildpack-java.git           v39
 download_buildpack https://github.com/heroku/heroku-buildpack-gradle.git         v12
-download_buildpack https://github.com/heroku/heroku-buildpack-grails.git         v17
-download_buildpack https://github.com/heroku/heroku-buildpack-play.git           v23
-download_buildpack https://github.com/heroku/heroku-buildpack-python.git         v58
-download_buildpack https://github.com/heroku/heroku-buildpack-php.git            v67
-download_buildpack https://github.com/heroku/heroku-buildpack-clojure.git        v66
-download_buildpack https://github.com/heroku/heroku-buildpack-scala.git          v55
-download_buildpack https://github.com/heroku/heroku-buildpack-go.git             6eeb09f
+download_buildpack https://github.com/heroku/heroku-buildpack-grails.git         v19
+download_buildpack https://github.com/heroku/heroku-buildpack-play.git           v24
+download_buildpack https://github.com/heroku/heroku-buildpack-python.git         v62
+download_buildpack https://github.com/heroku/heroku-buildpack-php.git            v75
+download_buildpack https://github.com/heroku/heroku-buildpack-clojure.git        v68
+download_buildpack https://github.com/heroku/heroku-buildpack-scala.git          v60
+download_buildpack https://github.com/heroku/heroku-buildpack-go.git             v16