Update dt-mergebot

[sandersn]

First update of 2023, first update in a long while.

The biggest change is that this now runs on a new Function named dtmergebot2, not dtmergebot.

Also:

• [x] change package entry point to dist/x not dist/src/x (get rid of rootDir), and fix weirdness in graphql-client
• [x] revert launch.json changes
• [x] remove _tests/convert.js
• [x] change secret, set up deploy on push again (maybe based on existing script??)
• [x] run lint
• [ ] run prettier edit: there is no prettier, but eslint has some formatting rules with fixers.