chore(deps): update exp module

[loderunner]

Rationale

The slices package in the golang.org/x/exp has changed the signature of comparison functions from returning a bool to returning an int.

This breaking change impacts Go programs relying on circle-policy-agent with a more recent version of the exp module, and prevents them from building.

[email protected]/cpa/tester/runner.go:164:30: type func(a NamedTest, b NamedTest) bool of func(a, b NamedTest) bool {…} does not match inferred type func(a NamedTest, b NamedTest) int for func(a E, b E) int

This PR updates the exp package and fixes the usage of slices.SortFunc to reflect the new signature.

Changes

• Update the golang.org/x/exp module to v0.0.0-20231206192017-f3f8817b8deb
• Fix usage of slices.SortFunc to reflect breaking changes in the golang.org/x/exp module

[jbialy]

lgtm!

[gosuku]

Think this also requires changes to https://github.com/CircleCI-Public/circle-policy-agent/blob/main/cpa/parsing.go#L131

[loderunner]

I don't see where this should change. As far as I understand, the function passed as argument toIndexFunc has not changed signature, and still returns a bool. Am I missing something? 🤔

[gosuku]

Yes, my bad actually that was my misread of the return type of IndexFunc as the return type of the func parameter.

[gosuku]

LGTM

[vallieres]

Closing, as this change was rolled in another pull request. We don't require the x/exp dependency anymore.