[8.14] ci(smoke-tests): set id-token when running other workflows (backport #13497)

[mergify]

Motivation/summary

permissions need to be set explicitly when calling other workflows even if those workflows already have got the permissions set.

Fixes

[Invalid workflow file: .github/workflows/smoke-tests-schedule.yml#L27](https://github.com/elastic/apm-server/actions/runs/9672905228/workflow)
The workflow is not valid. .github/workflows/smoke-tests-schedule.yml (Line: 27, Col: 3): Error calling workflow 'elastic/apm-server/.github/workflows/smoke-tests-os.yml@4cf627cb98d0624f5206dfbfa30f88f64794c739'. The nested job 'smoke-tests-os' is requesting 'id-token: write', but is only allowed 'id-token: none'.

See https://github.com/elastic/apm-server/actions/runs/9672905228

Checklist

• Update CHANGELOG.asciidoc
• Documentation has been updated

For functional changes, consider:

• Is it observable through the addition of either logging or metrics?
• Is its use being published in telemetry to enable product improvement?
• Have system tests been added to avoid regression?

How to test these changes

Related issues

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This is an automatic backport of pull request #13497 done by [Mergify](https://mergify.com).