Update dependency coveralls to v3.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
coveralls	3.1.0 -> 3.1.1

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Release Notes

nickmerwin/node-coveralls

### [`v3.1.1`](https://togithub.com/nickmerwin/node-coveralls/releases/3.1.1) [Compare Source](https://togithub.com/nickmerwin/node-coveralls/compare/v3.1.0...3.1.1) - swapped `exec` for `execFile`. Credit: Adar Zandberg from the CxSCA AppSec team at Checkmarx. - updated `devDependencies` - merged Dependabot PRs

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Configuration

📅 Schedule: "every 6 months on the first day of the month" (UTC).

🚦 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 WhiteSource Renovate. View repository job log here.

[coveralls]

Pull Request Test Coverage Report for Build 988280393

• 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 29.268%

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Totals
Change from base Build 988278270:	0.0%
Covered Lines:	11
Relevant Lines:	33

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💛 - Coveralls