[8.10](backport #3513) Temporarily set the version to 8.10.2 and switch ESS region to run integration tests

[mergify]

This is an automatic backport of pull request #3513 done by Mergify.

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[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-10-04T16:28:30.868+0000

• Duration: 27 min 55 sec

Test stats 🧪

Test	Results
Failed	0
Passed	6277
Skipped	55
Total	6332

💚 Flaky test report

Tests succeeded.

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.765% (80/81)	👍
Files	67.832% (194/286)	👍
Classes	66.48% (357/537)	👍
Methods	53.112% (1118/2105)	👍
Lines	38.606% (12716/32938)	👍 0.027
Conditionals	100.0% (0/0)	💚

[cmacknz]

Force merging. The test failure is unrelated and there are no code changes in this PR.

I believe the failure will be fixed by #3495.