arrow

GH-45183: [C++][Release] Add llvm-dev back to setup-ubuntu.sh (#45184)

### Rationale for this change

Fixes verification nightly jobs. See https://github.com/apache/arrow/issues/45183.

### What changes are included in this PR?

Updates dev/release/setup-ubuntu.sh to re-add llvm-dev as an installed package.

### Are these changes tested?

Yes, locally (via `archery docker run....`)

### Are there any user-facing changes?

No.

Closes #45183 
* GitHub Issue: #45183

Authored-by: Bryce Mecum <petridish@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>