build(deps-dev): bump testcafe from 1.20.1 to 3.7.1

Bumps [testcafe](https://github.com/DevExpress/testcafe) from 1.20.1 to 3.7.1.
- [Release notes](https://github.com/DevExpress/testcafe/releases)
- [Changelog](https://github.com/DevExpress/testcafe/blob/master/CHANGELOG.md)
- [Commits](DevExpress/testcafe@v1.20.1...v3.7.1)

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

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