Replace reflect.Ptr with reflect.Pointer

[HadrienPatte]

Ptr has been deprecated and has a gofix directive to inline it to Pointer.

See Ptr.

Also replace reflect.PtrTo with reflect.PointerTo for the same reason:

PtrTo is the old spelling of PointerTo. The two functions behave identically.

[Copilot]

Pull Request Overview

This PR updates deprecated reflect constants and functions to their current counterparts. The changes replace the deprecated reflect.Ptr with reflect.Pointer and reflect.PtrTo with reflect.PointerTo throughout the codebase to align with Go's current reflect package API.

• Replace all instances of reflect.Ptr with reflect.Pointer
• Replace reflect.PtrTo with reflect.PointerTo
• Update switch cases and conditional checks to use the new constants

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
yaml.go	Updates pointer kind checks in decoder methods and struct info processing
sorter.go	Updates pointer kind checks in key comparison logic
internal/testutil/assert/assert.go	Updates pointer kind checks in assertion utilities
encode.go	Updates pointer kind checks in marshaling logic
decode.go	Updates pointer kind checks in unmarshaling logic

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[ccoVeille]

I like your PR that supersedes #29 in its attempt.

I feel like I will close #29 at some point or complete it with my own commits.

But your PR is fine and limited. So I like it the way you did

[stefanprodan]

LGTM