fix: upgrade geckodriver from 3.0.1 to 3.2.0

Snyk has created this PR to upgrade geckodriver from 3.0.1 to 3.2.0.

See this package in npm:
https://www.npmjs.com/package/geckodriver

See this project in Snyk:
https://app.snyk.io/org/jwood3794/project/475f5e9d-de1d-4ade-b414-0c9c3ed6f3f5?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -28,7 +28,7 @@
     "cross-env": "7.0.3",
     "eslint": "7.25.0",
     "finalhandler": "1.1.2",
-    "geckodriver": "3.0.1",
+    "geckodriver": "3.2.0",
     "global-replaceify": "1.0.0",
     "grunt": "1.4.0",
     "grunt-babel": "8.0.0",