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

mu4e: update to 1.10.3
https://github.com/void-linux/void-packages/pull/43116

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-glibc
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - x86_64-musl  (crossbuild)
  - aarch64 (crossbuild)
  - armv7l (crossbuild)

#### Notes
 - changed build style to `meson` as it is the primary build option of `mu`
 - removed `guile` build option because it depends on `guile-3.x`.
 - users will have to re-initialize their database (`mu-init(1)`)