Add bundler to dependabot (along with scripts)
Add bundler to dependabot (along with scripts)

There may have been a reason to exclude this originally; perhaps the intention to get rid of Ruby/Rails code; however we still have it and it is bundled with the server, so we should probably try our best to keep it updated and patched where appropriate.
ketan/gocd,ketan/gocd,gocd/gocd,ketan/gocd,ketan/gocd,gocd/gocd,gocd/gocd,Skarlso/gocd,Skarlso/gocd,gocd/gocd,Skarlso/gocd,Skarlso/gocd,ketan/gocd,ketan/gocd,gocd/gocd,Skarlso/gocd,Skarlso/gocd,gocd/gocd