[updatecli] update elastic stack version for testing 8.8.3-412b0627

[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: 2023-07-13T15:09:30.430+0000

• Duration: 80 min 4 sec

Test stats 🧪

Test	Results
Failed	0
Passed	26422
Skipped	1984
Total	28406

💚 Flaky test report

Tests succeeded.

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