clang-nightly images have not been updated in three weeks

Our job to check how outdated clang-nightly is shows that the images have not been updated in three weeks:

https://github.com/ClangBuiltLinux/continuous-integration2/actions/runs/7392163546/job/20110213387

https://apt.llvm.org shows they have been updated within the last couple of days or so, is there an issue with building or mirroring the images?