Fix node-forge vulnerability in playgrounds/html

[curquiza]

And update dependencies in playgrounds/html/yarn.lock

[bidoubiwa]

An issue was opened in the parcel repo

You do realize that this isn't an actual issue right? You have to use nodeforge.util.setPath in order to trigger the vulnerability, which parcel does not. These npm warnings just create work for maintainers in most cases due to people complaining in issues like this one.

So we might want to merge just to remove the vulnerability in github interface.

[curquiza]

bors merge

[bors]

Build succeeded:

• integration-tests
• playground-builds
• style-check