Update supercharge/mongodb-github-action action to v1.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
supercharge/mongodb-github-action	action	minor	1.4.1 -> 1.6.0

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Release Notes

supercharge/mongodb-github-action

### [`v1.6.0`](https://togithub.com/supercharge/mongodb-github-action/blob/master/CHANGELOG.md#​160-httpsgithubcomsuperchargejsmongodb-github-actioncomparev150v160---2021-06-01) [Compare Source](https://togithub.com/supercharge/mongodb-github-action/compare/1.5.0...1.6.0) ##### Added - show replica set status after `rs.initiate()` ### [`v1.5.0`](https://togithub.com/supercharge/mongodb-github-action/blob/master/CHANGELOG.md#​150-httpsgithubcomsuperchargejsmongodb-github-actioncomparev141v150---2021-05-31) [Compare Source](https://togithub.com/supercharge/mongodb-github-action/compare/1.4.1...1.5.0) ##### Added - refined tests for custom ports - refined custom port handling when using replica sets - extended output for better debugging in GitHub Actions

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Configuration

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