BigDecimal latest issue with JRuby 9.4

[luke-hill]

https://github.com/cucumber/cucumber-ruby/actions/runs/15327655017/job/43126168945

Looks like a new release broke things for standard users.

For reference previous builds with the previous version seemed to install fine

[hsbt]

It's already fixed.

[luke-hill]

Can confirm this is now working after re-running the pipeline ✅