Bump testcafe from 1.18.3 to 1.18.4 (#446)

Bumps [testcafe](https://github.com/DevExpress/testcafe) from 1.18.3 to 1.18.4.
- [Release notes](https://github.com/DevExpress/testcafe/releases)
- [Changelog](https://github.com/DevExpress/testcafe/blob/master/CHANGELOG.md)
- [Commits](DevExpress/testcafe@v1.18.3...v1.18.4)

---
updated-dependencies:
- dependency-name: testcafe
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]