please consider use apt.llvm.org to fix https://github.com/ldc-developers/ldc/pull/4257

[d007]

for debian/ubuntu linux distribution:

The apt.llvm.org libclang-rt-14-dev package deps on libc6, will 
make the apt force remove `clang-14`, `libclang-common-14-dev`, 
so you can not build with clang-common library or with `sanitizer 
runtimes`.


If you use ldc2 with llvm15, there will be a lot LTO problem hard 
to detected, and  some time get unfixable local thread storage 
error.


https://github.com/ldc-developers/ldc/pull/4257 blocked for 2 
mouth, use https://apt.llvm.org/ install llvm15/llvm16 in github 
action maybe is a solution?