ci: update tested ROCm version

Author: danieldk

.github/workflows/build_kernel_rocm.yaml

@@ -34,7 +34,7 @@ jobs:
       # For now we only test that there are no regressions in building ROCm
       # kernels. Also run tests once we have a ROCm runner.
       - name: Build relu kernel
-        run: ( cd examples/kernels/relu && nix build .\#redistributable.torch211-cxx11-rocm70-x86_64-linux -L )
+        run: ( cd examples/kernels/relu && nix build .\#redistributable.torch211-cxx11-rocm71-x86_64-linux -L )
 
       - name: Build relu kernel (compiler flags)
-        run: ( cd examples/kernels/relu-compiler-flags && nix build .\#redistributable.torch211-cxx11-rocm70-x86_64-linux )
+        run: ( cd examples/kernels/relu-compiler-flags && nix build .\#redistributable.torch211-cxx11-rocm71-x86_64-linux )