[llvm] [AMDGPU][True16][MC] update VOP1 dasm test with latest script (PR #120281)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `libc-arm32-debian-dbg` running on `libc-arm32-debian` while building `llvm` at step 3 "checkout".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/182/builds/6355

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 3 (checkout) failure: update (failure)
git version 2.39.2
fatal: unable to access 'https://github.com/llvm/llvm-project.git/': The requested URL returned error: 503
fatal: unable to access 'https://github.com/llvm/llvm-project.git/': The requested URL returned error: 503

```

</details>

https://github.com/llvm/llvm-project/pull/120281