chore: use generic Set instead of deprecated sets.String

[rafvasq]

Motivation

To address deprecation warnings which appeared after updating to Go 1.19 in #379

Modifications

Updated deprecated code following sets package doc, e.g.:

use generic Set instead. new ways: s1 := Set[string]{} s2 := New[string] ()

Result

Resolves #386

[ckadner]

/lgtm

[kserve-oss-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ckadner, rafvasq
To complete the pull request process, please assign tjohnson31415 after the PR has been reviewed.
You can assign the PR to them by writing /assign @tjohnson31415 in a comment when ready.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[kserve-oss-bot]

New changes are detected. LGTM label has been removed.

[ckadner]

Thanks @rafvasq