chore: Fix otel module name

[alexandear]

Fixes: #4185
Closes: #4186

I think the issue is the otel module name: it should be github.com/google/go-github/otel/v85, not github.com/google/go-github/v85/otel.

See modules and tags in https://github.com/thepudds/nested-module-example

[gmlewis]

Then maybe we don't need the go.work?
I would love to NOT add that file.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.71%. Comparing base (0a16e22) to head (f2ad552).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4187      +/-   ##
==========================================
+ Coverage   93.69%   93.71%   +0.01%     
==========================================
  Files         210      209       -1     
  Lines       19763    19770       +7     
==========================================
+ Hits        18517    18527      +10     
+ Misses       1049     1046       -3     
  Partials      197      197              

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[alexandear]

Then maybe we don't need the go.work? I would love to NOT add that file.

Yes. I think we don't need to add the go.work.

[gmlewis]

Awesome, thank you, @alexandear!
LGTM.
Merging.