Replace go-bindata with Go's native embed package

[krantzinator]

Is your feature request related to a problem? Please describe.
We are using an external package, and could use a native package instead. The main benefit is not relying on an external dependency that regularly causes hiccups when setting up a Waypoint environment (CI, local dev, etc).

Describe the solution you'd like
Use this https://pkg.go.dev/embed instead of github.com/kevinburke/go-bindata/

Describe alternatives you've considered
Keeping go-bindata, which is one more thing for devs to download.

Additional context
Vault did this here