Create gemlock file for CI
When updating the Ruby gem for the platform-ci (tests/platform-ci/Gemfile
) I didn't understand why it didn't work:
https://0xacab.org/kwadronaut/platform/-/jobs/71807
kwadronaut/platform@334b6131
This was due to caching in the CI, the lockfile is generated once, therefore we should add it to git, to make sure we're always testing the correct gems. (And if the lockfile gets changed and updated, caching won't block us).