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

Update glslang and shaderc to the current version.
https://github.com/void-linux/void-packages/pull/41693

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

#### Local build testing
- I built this PR locally for my native architecture, (x86_64-glibc)

The update is also necessary for Godot 4 to be able to use the shared library instead of the
builtin glslang.