Bump is-ci from 2.0.0 to 3.0.0 (#171)

Bumps [is-ci](https://github.com/watson/is-ci) from 2.0.0 to 3.0.0.
- [Release notes](https://github.com/watson/is-ci/releases)
- [Changelog](https://github.com/watson/is-ci/blob/master/CHANGELOG.md)
- [Commits](watson/is-ci@v2.0.0...v3.0.0)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -54,7 +54,7 @@
     "eslint": "^7.21.0",
     "eslint-config-stylelint": "^13.1.0",
     "husky": "^5.1.3",
-    "is-ci": "^2.0.0",
+    "is-ci": "^3.0.0",
     "jest": "^26.6.3",
     "lint-staged": "^10.5.4",
     "np": "^7.4.0",