Fix ml_test protobuf conflict for Yaml Xlang Direct

Author: aIbrahiim

.github/trigger_files/beam_PostCommit_Yaml_Xlang_Direct.json

@@ -1,4 +1,4 @@
 {
   "comment": "Modify this file in a trivial way to cause this test suite to run",
-  "revision": 3
+  "revision": 4
 }

sdks/python/setup.py

@@ -601,9 +601,11 @@ def get_portability_package_data():
               # tests due to tag check introduced since pip 24.2
               # https://github.com/apache/beam/issues/31285
               # 'xgboost<2.0',  # https://github.com/apache/beam/issues/31252
-              # tft needs protobuf<5; tf2onnx 1.17+ allows protobuf 5 on the
-              # ADK-only path.
-              'tf2onnx>=1.16.1,<1.17',
+              # tft needs protobuf>=3.20.3,<5 and google-cloud-dataflow-client
+              # (gcp extra) needs protobuf>=4.25.8, so protobuf must be in
+              # [4.25.8, 5). tf2onnx 1.16.x caps protobuf<4 and is therefore
+              # unresolvable here; 1.17+ drops that cap (protobuf>=3.20).
+              'tf2onnx>=1.17.0,<1.18',
           ] + ml_base_core,
           'p310_ml_test': [
             'datatable',