build: update deps

Author: AndreyBelym

package.json

@@ -133,7 +133,7 @@
     "semver": "^5.6.0",
     "source-map-support": "^0.5.16",
     "strip-bom": "^2.0.0",
-    "testcafe-browser-tools": "2.0.17",
+    "testcafe-browser-tools": "2.0.18",
     "testcafe-hammerhead": "24.5.9",
     "testcafe-legacy-api": "5.1.2",
     "testcafe-reporter-dashboard": "0.2.4-rc.1",