v0.15.0-rancher115

What's Changed

• added new region ca-west-1 by @atifhafeez in #238
• Fix the issue where rancher-machine does not clean up vSphere VMs that are in failed status by @jiaqiluo in #254
• update default AMIs to Ubuntu 22.04 by @jiaqiluo in #256

New Contributors

• @atifhafeez made their first contribution in #238

Full Changelog: v0.15.0-rancher114...v0.15.0-rancher115