[NPU] chore: bump to CANN 8.3.RC1 and Pytorch 2.8.0 (#13647)

python/sglang/test/test_utils.py

@@ -1245,8 +1245,8 @@ def run_bench_offline_throughput(model, other_args):
 
     try:
         stdout, stderr = process.communicate()
-        output = stdout.decode()
-        error = stderr.decode()
+        output = stdout.decode(errors="backslashreplace")
+        error = stderr.decode(errors="backslashreplace")
         print(f"Output: {output}", flush=True)
         print(f"Error: {error}", flush=True)