Infra: Get all deps updated

[ryan-roemer]

Probably good timing in line with #2205 and/or we can do some piecemeal first:

• [x] Update "easy" deps
• [x] Audit and remove unused deps (especially after #2205)
• [x] Update eslint deps + all changed files
• [ ] update d3-array (and publish new version! (patch or minor bump?)
• [ ] Remove .npmrc thing needed with strict-peer-dependencies=false and actually fix peer deps
• [ ] Try to remove package.json:pnpm.overrides with updated packages (eslint-related)
• [ ] Search on TODO(dependencies)

$ pnpm outdated
# ...