fix(deploy): fix the deployment to rubygems

Bob Van Landuytrequested to merge
bvl/deploy-full-version into master

fix(deploy): fix the deployment to rubygems

This makes sure that the job only runs on tags that match a full semver release, not the truncated versions.

It also makes the job run in a recent ruby image based on the .with_bundle job from common-ci-tasks.

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