Use of deprecated GetNumber() method from Crossplane Runtime

[stevendborrelli]

What happened?

resource/composite/composite.go uses GetNumber(), which was deprecated and removed from Crossplane runtime In crossplane/crossplane-runtime@11e9468. This causes downstream functions to break if they update their go.mod.

function-sdk-go/resource/composite/composite.go

Line 312 in 0a4b30c

if f64, err := fieldpath.Pave(xr.Object).GetNumber(path); err == nil {

[negz]

Using GetNumber was actually intentional here. See the comment above:

function-sdk-go/resource/composite/composite.go

Line 298 in 0a4b30c

// This is a bit of a hack. Kubernetes JSON decoders will get us a

I didn't consider the fact that it was deprecated though - I think having our own implementation of GetNumber as you've done in #59 makes sense here. Thanks!