docs: add note about Bun

[nikpivkin]

Description

Users have questions about Bun support, so I've added a note to the documentation.

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[knqyf263]

We should update the tables as well.

[itaysk]

needs to be added here and here
N.B not sure why we need 3 places but for now at least keep it consistent

[knqyf263]

needs to be added here and here

We don't need to update this page as it doesn't mention package managers, but language.

And this page is exactly what we updated in this PR. Am I missing something? Note that this change has not been deployed yet and exists only in dev. @itaysk
https://aquasecurity.github.io/trivy/dev/docs/coverage/language/nodejs/

[knqyf263]

N.B not sure why we need 3 places but for now at least keep it consistent

Therefore, we have two places. One place is for an overview, and the other is for details.