[skiplang] Update to LLVM 19.

[beauby]

No description provided.

[mbouaziz]

I remember I had checked the changelog for versions 16 and 17. Have you done the same for 18 and 19?

[beauby]

I remember I had checked the changelog for versions 16 and 17. Have you done the same for 18 and 19?

Yes, nothing seems to be of concern in 18/19. However, the main thing that should be an issue to us is the removal of support for typed pointers in version 17, though I have been daily driving LLVM 19 for a few months and haven't come across any issue.
I mainly opened this PR to check whether any issue would arrise in CI, but had forgotten that the docker image was not built dynamically.

[mbouaziz]

Yeah, you probably need to push docker images under another tag for this PR

[mbouaziz]

See #736 for commits to cherry-pick

[beauby]

See #736 for commits to cherry-pick

Yup, those are one my list.