Allow all of AMDGPU.jl to fail.

[ci skip]

Author: maleadt

.buildkite/pipeline.yml

@@ -115,8 +115,7 @@ steps:
       rocm: "*"
     if: build.message !~ /\[skip tests\]/ && !build.pull_request.draft
     timeout_in_minutes: 120
-    soft_fail:
-      - exit_status: 3
+    soft_fail: true
     env:
       JULIA_LLVM_ARGS: "-opaque-pointers"