Bump xml2js and selenium-webdriver

Removes [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js). It's no longer used after updating ancestor dependency [selenium-webdriver](https://github.com/SeleniumHQ/selenium). These dependencies need to be updated together.


Removes `xml2js`

Updates `selenium-webdriver` from 2.53.3 to 4.40.0
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Commits](https://github.com/SeleniumHQ/selenium/commits/selenium-4.40.0)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-version: 
  dependency-type: indirect
- dependency-name: selenium-webdriver
  dependency-version: 4.40.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package-lock.json

@@ -15,7 +15,7 @@
   "devDependencies": {
     "testem": "*",
     "browserstack": "*",
-    "selenium-webdriver": "^2.53.2"
+    "selenium-webdriver": "^4.40.0"
   },
   "dependencies": {
     "browserstack-local": "^1.0.0"