Cycles: Add Blackwell to Cycles CUDA binaries architectures

Enables building of a Cubin for GPUs based on Blackwell architecture
if CUDA toolkit version 12.8 or higher is installed.
Only added sm_120 to the default set, since it is the one relevant for
consumer GPUs (RTX 5090 etc.) that are generally used with Blender.

Pull Request: https://projects.blender.org/blender/blender/pulls/134170

build_files/config/pipeline_config.yaml

@@ -11,7 +11,7 @@ buildbot:
     cuda11:
         version: '11.4.1'
     cuda12:
-        version: '12.1.1'
+        version: '12.8.0'
     hip:
         windows:
             version: '5.7.32000'