synchronize schema spec

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What

APM agent json schema automatic sync

Why

Changeset

• elastic/apm-server@4ff43c91d add faas.{name,verson} to tx + txmetrics (add faas.{name,verson} to tx + txmetrics apm-server#7427)

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• Start Time: 2022-03-02T11:02:12.421+0000

• Duration: 21 min 1 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4812
Skipped	3051
Total	7863

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