babeld: update to 1.13.1

Announcement:
https://alioth-lists.debian.net/pipermail/babel-users/2023-July/004125.html



Remove upstreamed patch:
- 100-local-make-local_kind-function-accessible.patch

Refresh patch:
- 600-add-ubus.patch

Signed-off-by: Nick Hainke <vincent@systemli.org>