Update jest monorepo to v24.9.0

This MR contains the following updates:

Package	Type	Update	Change
babel-jest	devDependencies	minor	24.8.0 -> 24.9.0
jest (source)	devDependencies	minor	24.8.0 -> 24.9.0

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merged

mentioned in commit 37b4c3cd

changed milestone to %2.8.1

added technical change label

changed milestone to %2.8.0