Pin selenium-webdriver to a specific version (OSOE-1070)

[Piedone]

SetupNodeDependenciesAsync dynamically creates a packages.json file, installing the latest version of selenium-webdriver. This can introduce breaking changes at any time, suddenly breaking our tests.

Instead, change this so the selenium-webdriver version is pinned and only updated consciously.

• The selenium-webdriver version is pinned. Ideally, this wouldn't work with anything special, and we'd use just a standard, static packages.json file. However, we don't need to install anything with that (like with NPM Targets), so maybe just having a const for the version string and updating how the ZAP version is updated (see renovate.json5) is the way to go.
• The selenium-webdriver version is updated by Renovate automatically. If we use a packages.json file, then nothing else to do. This can be enough by using ConstantFromJson from Helpful Libraries instead of a hard-coded version. Otherwise, Renovate will need to have a regex customManager configured to update the version number. For examples, see the renovate.json5 file in the root.

Jira issue