[7.16](backport #28919) Update reference to github.com/Azure/azure-event-hubs-go

[mergify]

This is an automatic backport of pull request #28919 done by Mergify.
Cherry-pick of 97f40d3 has failed:

On branch mergify/bp/7.16/pr-28919
Your branch is up to date with 'origin/7.16'.

You are currently cherry-picking commit 97f40d3f7c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   CHANGELOG.next.asciidoc
	modified:   NOTICE.txt
	modified:   go.mod

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   go.sum

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[elasticmachine]

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• Start Time: 2021-11-15T18:15:22.450+0000

• Duration: 177 min 4 sec

• Commit: c918c93

Test stats 🧪

Test	Results
Failed	0
Passed	49428
Skipped	4656
Total	54084

💚 Flaky test report

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[narph]

/test