[updatecli] update elastic stack version for testing 8.10.0-e4344f1d

[apmmachine]

Bump elastic-stack to latest snapshot version

Update snapshot.yml

Updated to content "" in file "testing/environments/snapshot.yml"

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[elasticmachine]

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• Start Time: 2023-09-04T15:09:01.895+0000

• Duration: 84 min 5 sec

Test stats 🧪

Test	Results
Failed	0
Passed	28122
Skipped	2015
Total	30137

💚 Flaky test report

Tests succeeded.

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