Infrastructure: Bump selenium-webdriver from 4.0.0-alpha.7 to 4.0.0-alpha.8 (pull #1654)

Bumps [selenium-webdriver](https://github.com/SeleniumHQ/selenium) from 4.0.0-alpha.7 to 4.0.0-alpha.8.
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Commits](https://github.com/SeleniumHQ/selenium/commits)

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

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

Author: dependabot[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "npm-merge-driver": "^2.3.6",
     "prettier": "^2.2.1",
     "run-node": "^2.0.0",
-    "selenium-webdriver": "^4.0.0-alpha.7",
+    "selenium-webdriver": "^4.0.0-alpha.8",
     "stylelint": "^13.8.0",
     "stylelint-config-prettier": "^8.0.2",
     "stylelint-config-standard": "^20.0.0",