[7.x](backport #1393) fix(ci): wait for downstream jobs on scheduled jobs

[mergify]

This is an automatic backport of pull request #1393 done by Mergify.

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[elasticmachine]

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• Start Time: 2021-07-28T08:51:38.358+0000

• Duration: 33 min 55 sec

• Commit: dfbf8c9

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Failed	0
Passed	231
Skipped	0
Total	231

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Test stats 🧪

Test	Results
Failed	0
Passed	231
Skipped	0
Total	231