Bump @stryker-mutator/core and @stryker-mutator/jest-runner#259

dependabot[bot] wants to merge 1 commit intomastergridonic/postcss-replace:masterfrom

dependabot/npm_and_yarn/stryker-mutator/core-and-stryker-mutator/jest-runner-6.1.2gridonic/postcss-replace:dependabot/npm_and_yarn/stryker-mutator/core-and-stryker-mutator/jest-runner-6.1.2Copy head branch name to clipboard