Upgrade HtmlUnit from 2.x to 3.x

[timja-bot]

This is an autogenerated PR for updating HtmlUnit

It follows the migration guide

Ping @timja if any questions

script source

[Greybird]

Hi @timja ; just for reference, a code update to HtmlOption.getValueAttribute was made incorrectly by the bot. Just to let you know should you think the bot could be improved.

[timja]

Hi @timja ; just for reference, a code update to HtmlOption.getValueAttribute was made incorrectly by the bot. Just to let you know should you think the bot could be improved.

Aware that's the only thing that I know of that isn't handled by the bot so far.
It uses a find and replace rather than an AST aware migration.

The rule is to migrate getValueAttribute except when the class is an HtmlOption, but can't handle that with a simple find and replace.

It doesn't affect many cases so either I or maintainers will fix that up. 😄

Thanks for sorting this one.