filepath variable collides with imported package name

[javorszky]

Code:

• builder/template/templates.go
  • imported package: https://github.com/suborbital/subo/blob/main/builder/template/templates.go#L9
  • variable: https://github.com/suborbital/subo/blob/main/builder/template/templates.go#L44
• builder/builder.go
  • import: https://github.com/suborbital/subo/blob/main/builder/builder.go#L8
  • variable: https://github.com/suborbital/subo/blob/main/builder/builder.go#L262

They should be different so shadowing rules don't need to happen which can be confusing.

There might be others, PR to this should fix all for filepath 🙂