Update dependency coveralls to v3.1.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
coveralls	devDependencies	minor	3.0.14 -> 3.1.0

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Release Notes

nickmerwin/node-coveralls

v3.1.0

Compare Source

• Handle service_job_number for parallelism in Travis and CircleCI (#​290) 705c3b5
• Update sinon to v7.5.0. (#​288) eb6dc35

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[codecov-io]

Codecov Report

Merging #12 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #12   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        10           
  Lines           74        74           
=========================================
  Hits            74        74           

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[coveralls]

Pull Request Test Coverage Report for Build 45

• 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 96.8%

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Totals
Change from base Build 43:	0.0%
Covered Lines:	74
Relevant Lines:	74

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💛 - Coveralls