further specify dependency versions

sdks/python/tox.ini

@@ -390,9 +390,11 @@ commands =
 
 [testenv:py39-tensorflow-213]
 deps =
-  212: tensorflow>=2.13rc1,<2.14
-  # Help pip resolve conflict with typing-extensions for old version of TF https://github.com/apache/beam/issues/30852
-  212: pydantic<2.7
+  213: 
+    tensorflow>=2.13rc1,<2.14
+    # Help pip resolve conflict with typing-extensions for old version of TF https://github.com/apache/beam/issues/30852
+    pydantic<2.7
+    protobuf==4.25.5
 extras = test,gcp
 commands =
   # Log tensorflow version for debugging
@@ -419,12 +421,21 @@ commands =
 
 [testenv:py{39,310}-transformers-{428,429,430}]
 deps =
-  428: transformers>=4.28.0,<4.29.0
-  429: transformers>=4.29.0,<4.30.0
-  430: transformers>=4.30.0,<4.31.0
-  torch>=1.9.0,<1.14.0
-  tensorflow==2.13.0
-  protobuf==4.25.5
+  428: 
+    transformers>=4.28.0,<4.29.0
+    torch>=1.9.0,<1.14.0
+    tensorflow==2.12.0
+    protobuf==4.25.5
+  429: 
+    transformers>=4.29.0,<4.30.0
+    torch>=1.9.0,<1.14.0
+    tensorflow==2.12.0
+    protobuf==4.25.5
+  430: 
+    transformers>=4.30.0,<4.31.0
+    torch>=1.9.0,<1.14.0
+    tensorflow==2.12.0
+    protobuf==4.25.5
 extras = test,gcp
 commands =
   # Log transformers and its dependencies version for debugging