Merge pull request #7111 from crohr/feature/packager-bundler2

Use latest buildpack with bundler2 support

.buildpacks

@@ -1,2 +1,2 @@
 https://github.com/heroku/heroku-buildpack-nodejs.git#v106
-https://github.com/pkgr/heroku-buildpack-ruby.git#v183-1
+https://github.com/pkgr/heroku-buildpack-ruby.git#v199-1

.pkgr.yml

@@ -40,5 +40,5 @@ wizards:
   - https://github.com/finnlabs/addon-repositories.git
   - https://github.com/pkgr/addon-smtp.git
   - https://github.com/pkgr/addon-memcached.git
-  - https://github.com/opf/addon-openproject.git#dynamic-node-dependencies
+  - https://github.com/opf/addon-openproject.git
 buildpack: https://github.com/opf/heroku-buildpack-multi.git