Always cancel previous CI jobs if new code comes in.
Always cancel previous CI jobs if new code comes in.

This reduces resource-usage and allows for faster iterations
in pull requests with a lot of updates as it does not gum up
workers.

chipsalliance/Surelog,alainmarcel/Surelog,chipsalliance/Surelog,alainmarcel/Surelog,alainmarcel/Surelog,chipsalliance/Surelog,chipsalliance/Surelog,alainmarcel/Surelog