Install correct Chromedriver version

[Mr0grog]

Tests recently started failing in GitHub actions, and it's because the pre-installed version of Chrome and the version of Chromedriver specified in package.json fell out of sync. This installs the latest Chromedriver, but also adds some NPM configuration options to make this future-proof by installing the correct, matching versions of Chromedriver and Chromium itself, rather than the specific on in package.json.

As a side note, it seems like we should only need to specify include_chromium=true (so we have a version of Chromium that matches Chromedriver), but that setting is ignored unless detect_chromedriver_version=true is also set, which seems counterintuitive to me (if you are installing a compatible chromium, you shouldn’t need to detect the version, since you are installing a known-compatible version, but maybe I’ve got the mental model wrong here).

[Mr0grog]

As a side note, it seems like we should only need to specify include_chromium=true (so we have a version of Chromium that matches Chromedriver), but that setting is ignored unless detect_chromedriver_version=true is also set

Ah, I misread the docs; include_chromium is not downloading Chromium (which I thought it was); it’s just saying that it’s OK to to fall back to Chromium if Chrome isn’t detected.

I’ve removed that line, since it’s not what I want here, and tested that detect_chromedriver_version works correctly with a current Chrome installed but different versions of chromedriver in package.json. Should be all good now.