[llvm] [BOLT][AArch64] Skip gadget pacret test on RHEL8 (PR #145527)

[Paschalis Mpeis via llvm-commits]

paschalis-mpeis wrote:

Hey Kristof,

Thanks for your review, I agree.
I'm marking this PR as draft and I'll ask internally for more details on the root cause.
I'll follow up once there's more clarity.

https://github.com/llvm/llvm-project/pull/145527