Bump got and geckodriver (#517)

Bumps [got](https://github.com/sindresorhus/got) and [geckodriver](https://github.com/vladikoff/node-geckodriver). These dependencies needed to be updated together.

Updates `got` from 11.8.2 to 11.8.5
- [Release notes](https://github.com/sindresorhus/got/releases)
- [Commits](sindresorhus/got@v11.8.2...v11.8.5)

Updates `geckodriver` from 2.0.4 to 3.0.2
- [Release notes](https://github.com/vladikoff/node-geckodriver/releases)
- [Commits](webdriverio-community/node-geckodriver@v2.0.4...v3.0.2)

---
updated-dependencies:
- dependency-name: got
  dependency-type: indirect
- dependency-name: geckodriver
  dependency-type: direct:development
...

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