Update package.json and add prettierignore

[benbridts]

Description of changes:

• Our build pipeline (using nodejs20) complained about old node versions in package.json, I've update the ones I could find
• locally I frequently had to run prettier to get unit tests to pass, ignoring the build outputs makes sense
• this also includes the commit from chore: Update snapshot #178, otherwise unit tests don't pass

Checklist

• 👋 I have run the unit tests, and all unit tests have passed.
• ⚠️ This pull request might incur a breaking change.

Breaking is very unlikely, but I have not tested this on older node build environments

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[gockle]

This issue has been resolved in the v3.4.0, if the error re-occurs please reopen the PR or create a new Issue.