Fix: outdated node on build

[Tuditi]

Summary

With the recent inclusion of @metamask-util, the build flow was broken. This has been fixed by updating the node version on the build file.

Also adds the option to run test builds manually.

Failing build here: https://github.com/bloomwalletio/bloom/actions/runs/7945086787
Successful ubuntu build here: https://github.com/bloomwalletio/bloom/actions/runs/7957639362

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Testing

Platforms

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• Desktop
  • MacOS
  • Linux
  • Windows

Instructions

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Checklist

Please tick the following boxes that are relevant to your changes.

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or modified tests that prove my changes work as intended
• I have verified that new and existing unit tests pass locally with my changes
• I have verified that my latest changes pass CI workflows for testing and linting
• I have made corresponding changes to the documentation