Infrastructure: Bump geckodriver from 1.19.1 to 1.20.0 (pull #1538)

Bumps [geckodriver](https://github.com/vladikoff/node-geckodriver) from 1.19.1 to 1.20.0.
- [Release notes](https://github.com/vladikoff/node-geckodriver/releases)
- [Commits](webdriverio-community/node-geckodriver@v1.19.1...v1.20.0)

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

package.json

@@ -34,7 +34,7 @@
     "cheerio": "^1.0.0-rc.2",
     "cspell": "^4.1.0",
     "eslint": "^7.10.0",
-    "geckodriver": "^1.19.1",
+    "geckodriver": "^1.20.0",
     "glob": "^7.1.6",
     "husky": "^4.3.0",
     "lint-staged": "^10.4.0",