Roll SK Tool from 9a963c3542ab to 83d167c8dec8

2021-07-22 [infra] Roll back Python to 3.8.10

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Change-Id: I841dad5a1d3aef1d4799949730c6a107a2c716ff
Reviewed-by: skia-autoroll <>
Commit-Queue: skia-autoroll <>
1 file changed