Update babel monorepo to v7.12.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@babel/cli (source)	7.12.7 -> 7.12.8
@babel/core (source)	7.12.7 -> 7.12.8

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Release Notes

babel/babel

v7.12.8

Compare Source

🐛 Bug Fix

• babel-traverse
  • #​12390 Avoid infinite loops in type inference logic (@​nicolo-ribaudo)
  • #​12387 Initialize NodePath context when using getSibling (@​nicolo-ribaudo)
• babel-cli
  • #​12382 Fix Node version check (@​Hypnosphi)

🏠 Internal

• #​12372 chore: fix watch config (@​JLHwung)

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[coveralls]

Coverage remained the same at 97.409% when pulling d79cb02 on renovate/babel-monorepo into b88d115 on master.