Update stryker monorepo to v3.2.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@stryker-mutator/core	devDependencies	minor	3.1.0 -> 3.2.1
@stryker-mutator/javascript-mutator	devDependencies	minor	3.1.0 -> 3.2.1
@stryker-mutator/mocha-framework	devDependencies	minor	3.1.0 -> 3.2.1
@stryker-mutator/mocha-runner	devDependencies	minor	3.1.0 -> 3.2.1

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Release Notes

stryker-mutator/stryker

v3.2.1

Compare Source

Bug Fixes

• remove duplicate package.json script (#​2198) (26beff2)

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Renovate configuration

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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 111

• 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 100.0%

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Totals
Change from base Build 109:	0.0%
Covered Lines:	9
Relevant Lines:	9

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💛 - Coveralls