🐛 Add sort to linkChannels output before diff check

[perdasilva]

Description of the change:

Recent changes made the semver template's implementation of linkChannels to return non-deterministic outputs due to random ordering of the output slice.

This PR updates the linkChannels method to return a list of channels ordered by name.

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[openshift-ci]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.25%. Comparing base (a0e2cf8) to head (158d49a).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1767      +/-   ##
==========================================
+ Coverage   55.17%   55.25%   +0.08%     
==========================================
  Files         136      136              
  Lines       15917    15973      +56     
==========================================
+ Hits         8782     8826      +44     
- Misses       5982     5992      +10     
- Partials     1153     1155       +2     

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[joelanford]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: joelanford

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