chore(deps): update dependency vscode-test to v1.6.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
vscode-test	1.5.2 -> 1.6.1

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Release Notes

Microsoft/vscode-test

### [`v1.6.1`](https://togithub.com/Microsoft/vscode-test/blob/master/CHANGELOG.md#​161--2021-07-15) [Compare Source](https://togithub.com/Microsoft/vscode-test/compare/v1.5.2...v1.6.1) - Rename to `@vscode/test-electron`

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