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

pencil2d: update to 0.6.6.
https://github.com/void-linux/void-packages/pull/36862

Description:
#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for my native architecture:
  - x86_64 (libc)
- I crossbuilt this PR locally for these architectures:
  - aarch64-musl
  - armv7l
  - armv6l-musl