Fix Bump ruby version
Some jobs are failing because our image is installing a floating version of ruby. I tried pinning, but the last alpine version does not have the repository to install the older ruby version anymore. So I'll just bump ruby everywhere.
Additionally, we're using a deprecated flag of bundler, so this will also fix the deprecation message.
I don't expect these changes to affect the product, but only CI/CD pipelines.
Failure examples:
Edited by João Alexandre Cunha