deps: update bundlesize, add more budgets

[brendankenny]

bundlesize has been having a bunch of issues in CI lately, and now there's a moderate security alert in one of its deps, so let's try bumping it to latest.

Unfortunately it brings in a rather heavyweight dep itself in a native brotli encoding library, but development seems to be picking back up again (siddharthkp/bundlesize#306) and that'll soon be optional if the node version has native brotli support.

Also added budgets for the other bundles as they vary quite a bit in size due to things included or not included in them.

[brendankenny]

If this doesn't work, we could also try out bundlewatch, which has a pretty nice details page for the bundle sizes

but doesn't have such a large community using it. https://bundlewatch.io/#/getting-started/using-bundlewatch

[patrickhulce]

boo to native dependencies :(

LGTM

+1 to dumping if it gets bad

[brendankenny]

well, the initial api call is still 500ing...I think that's when it's trying to query the bundlesize from the parent commit (hence the -null in the status).

We need to update anyways and I think the new status message is improved (even better when it can start querying master so we get some update on size change in that PR), so still worth landing.