release: configure git user

[v1v]

What does this PR do?

Use setupAPMGitEmail within the release context

Why

withGitRelease configures the git user pointed to the last committer, but in this case we want to force the user

[ghost]

💚 Build Succeeded

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Build stats

• Start Time: 2022-09-12T13:39:14.110+0000

• Duration: 56 min 26 sec

Test stats 🧪

Test	Results
Failed	0
Passed	3143
Skipped	36
Total	3179

💚 Flaky test report

Tests succeeded.

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[eyalkoren]

that was a race condition and you won @v1v 😄