update llama artifact (#14915)

experimental/regression_suite/tests/pregenerated/test_llama2.py

diff --git a/experimental/regression_suite/tests/pregenerated/test_llama2.py b/experimental/regression_suite/tests/pregenerated/test_llama2.py
index 3999e75..de5326f 100644
--- a/experimental/regression_suite/tests/pregenerated/test_llama2.py
+++ b/experimental/regression_suite/tests/pregenerated/test_llama2.py
@@ -19,7 +19,7 @@
 ]
 
 llama2_7b_f16qi4_source = fetch_source_fixture(
-    "https://storage.googleapis.com/shark_tank/stella/llama2_7b_int4_stripped.mlir",
+    "https://storage.googleapis.com/shark_tank/dan/llama/llama2_7b_int4_stripped.mlir",
     group="llama2_7b_f16qi4",
 )