chore(deps): update dependency babel-plugin-istanbul to v6.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
babel-plugin-istanbul	6.0.0 -> 6.1.1

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Release Notes

istanbuljs/babel-plugin-istanbul

### [`v6.1.1`](https://togithub.com/istanbuljs/babel-plugin-istanbul/blob/master/CHANGELOG.md#​611-httpswwwgithubcomistanbuljsbabel-plugin-istanbulcomparev610v611-2021-10-16) [Compare Source](https://togithub.com/istanbuljs/babel-plugin-istanbul/compare/v6.0.0...v6.1.1)

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