There's a merged pull request on the void-packages repository

wesnoth: update to 1.18.0.
https://github.com/void-linux/void-packages/pull/49545

Description:
- I tested the changes in this PR: **YES**
Checked out new compaign.

- I built this PR locally for my native architecture, (x86_64-glibc)

Patch for boost is no longer needed as it was commited to 1.17 version.
Added libcurl as changelog says wesnoth now needs it for compiling.