Let cuQuantum soft fail on CI (#2875)

* Let cuQuantum soft fail on CI

There isn't yet a cuQuantum release that works with the CUDA 13 driver yet, so these tests will always fail for now.

[only subpackages]

Author: kshyatt

.buildkite/pipeline.yml

@@ -97,6 +97,15 @@ steps:
               - "cuTENSOR"
               - "cuStateVec"
               - "cuTensorNet"
+          adjustments:
+            - with:
+                package: "cuStateVec"
+                cuda: "12.0"
+              soft_fail: true
+            - with:
+                package: "cuTensorNet"
+                cuda: "12.0"
+              soft_fail: true
         plugins:
           - JuliaCI/julia#v1:
               version: "1.10"