Update coverallsapp/github-action action to v2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
coverallsapp/github-action	action	major	v1.2.4 -> v2.0.0

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Release Notes

coverallsapp/github-action

### [`v2.0.0`](https://togithub.com/coverallsapp/github-action/compare/v1.2.4...v2.0.0) [Compare Source](https://togithub.com/coverallsapp/github-action/compare/v1.2.4...v2.0.0)

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Configuration

📅 Schedule: Branch creation - "every 4 weeks on saturday" in timezone Pacific/Auckland, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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This PR has been generated by Mend Renovate. View repository job log here.

[coveralls]

Pull Request Test Coverage Report for Build 4576583978

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.25%

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Totals
Change from base Build 4576579631:	0.0%
Covered Lines:	56
Relevant Lines:	60

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💛 - Coveralls