refactor: replace golang.org/x/exp with stdlib

[LesCyber]

Description

These experimental packages are now available in the Go standard library since Go 1.21 and Go 1.23:

golang.org/x/exp/slices -> slices (https://go.dev/doc/go1.21#slices)

Summary by CodeRabbit

• Chores
  • Updated dependency references to improve clarity without affecting functionality.
• Refactor
  • Shifted to a built-in library component for enhanced stability in core operations.

[coderabbitai]

Walkthrough

The pull request updates two files. In v2/go.mod, the dependency for golang.org/x/exp is modified by appending the comment // indirect to the version declaration, clarifying that it is an indirect dependency. In v2/multitree.go, the import statement changes from the experimental package "golang.org/x/exp/slices" to the standard library package "slices". These adjustments improve clarity and selection of package sources without changing the functionality.

Changes

File(s)	Change Summary
v2/go.mod	Dependency update: Appended // indirect to golang.org/x/exp v0.0.0-20231006140011-7918f672742d for indirect dependency clarification.
v2/multitree.go	Import statement updated: Changed "golang.org/x/exp/slices" to the standard library "slices".

Poem

I'm a merry rabbit, hopping with a smile,
Updated dependencies make my code worthwhile.
Imports prance from exp to standard with glee,
Clean changes abound—oh, how joyful they be!
With whiskers twitching, I cheer this spree!

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0bce70d and 0100327.

📒 Files selected for processing (2)

• v2/go.mod (1 hunks)
• v2/multitree.go (1 hunks)

✅ Files skipped from review due to trivial changes (2)

• v2/go.mod
• v2/multitree.go

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