[8.8](backport #34874) [Azure] Sanitize message in case of malformed json

[mergify]

This is an automatic backport of pull request #34874 done by Mergify.

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[elasticmachine]

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• Start Time: 2023-06-02T14:25:17.927+0000

• Duration: 75 min 42 sec

Test stats 🧪

Test	Results
Failed	0
Passed	2901
Skipped	175
Total	3076

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