Swap out ROCm 5.7.2 for 6.0.2

There's a compiler bug in 5.7.2 that causes an ICE for one of domain
wall source files, so it's getting swapped out for one that resolves
the issue.

.github/workflows/rocm-build-ci.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: [self-hosted, amd]
     strategy:
       matrix:
-        rocm: [ 5.6.1, 5.7.2 ]
+        rocm: [ 5.6.1, 6.0.2 ]
     steps:
       - uses: actions/checkout@v3
       - run: |