Update babel monorepo to v7.5.5

This MR contains the following updates:

Package	Type	Update	Change
@babel/plugin-proposal-class-properties	devDependencies	patch	7.5.0 -> 7.5.5
@babel/plugin-transform-runtime	devDependencies	patch	7.5.0 -> 7.5.5
@babel/preset-env (source)	devDependencies	patch	7.5.4 -> 7.5.5

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