chore(deps): bump sortablejs in /src/dispatch/static/dispatch (#5558)

Bumps [sortablejs](https://github.com/SortableJS/Sortable) from 1.15.4 to 1.15.6.
- [Release notes](https://github.com/SortableJS/Sortable/releases)
- [Commits](SortableJS/Sortable@1.15.4...1.15.6)

---
updated-dependencies:
- dependency-name: sortablejs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>