Use Go 1.22 in workflows

[mbg]

This PR updates the workflows to use Go 1.22. I have also used this opportunity to disable the automatic caching that the setup-go Action performs to ensure that this doesn't interfere with our testing.

Merge / deployment checklist

• [ ] Confirm this change is backwards compatible with existing workflows.
• [ ] Confirm the readme has been updated if necessary.
• [ ] Confirm the changelog has been updated if necessary.