feat: Upgrade 19

[muhammadahmadasifbhatti]

Closes #

adopt a passed proposal

When a proposal passes on agoric-3 Mainnet, it should be included in the history that this synthetic image tracks.

• before this PR, change any fromTag using latest (such as a3p-integration) to use a fixed version (otherwise they will fail when this PR changes latest and they pick it up)
• before merging this PR, include a link to a PR that adopts its fromTag use-${proposalName} (where proposalName is the part of the agoric-3-proposals proposal directory name after the colon, cf. a3p-integration/proposals)
• after this PR merges, merge that other PR

image building process

This should not affect other repos but be prepared that it might.

@agoric/synthetic-chain library

These need to be published to be consumed in other apps. It's not yet on 1.0 so breaking changes are allowed, but please don't make them gratuitously.

• indicate in the PR description when you expect these to be published and by whom (it's currently a manual process)

tooling improvements

As long as it passes CI it should be fine.