Bump nightwatch from 2.6.25 to 3.13.0

Bumps [nightwatch](https://github.com/nightwatchjs/nightwatch) from 2.6.25 to 3.13.0.
- [Release notes](https://github.com/nightwatchjs/nightwatch/releases)
- [Commits](nightwatchjs/nightwatch@v2.6.25...v3.13.0)

---
updated-dependencies:
- dependency-name: nightwatch
  dependency-version: 3.13.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -118,7 +118,7 @@
     "mini-css-extract-plugin": "^2.6.1",
     "minimist": "^1.2.8",
     "mock-socket": "^9.0.3",
-    "nightwatch": "^2.3.0",
+    "nightwatch": "^3.13.0",
     "open": "^8.4.0",
     "pngjs": "^6.0.0",
     "pre-commit": "^1.2.2",