feat: Add gemini-3-pro-preview support for local tokenizer

PiperOrigin-RevId: 838759612

Author: sararob

google/genai/_local_tokenizer_loader.py

@@ -44,6 +44,7 @@
     "gemini-2.5-flash-lite-preview-06-17": "gemma3",
     "gemini-2.0-flash-001": "gemma3",
     "gemini-2.0-flash-lite-001": "gemma3",
+    "gemini-3-pro-preview": "gemma3",
 }
 
 
@@ -62,7 +63,7 @@ class _TokenizerConfig:
         ),
     ),
     "gemma3": _TokenizerConfig(
-        model_url="https://raw.githubusercontent.com/google/gemma_pytorch/014acb7ac4563a5f77c76d7ff98f31b568c16508/tokenizer/gemma3_cleaned_262144_v2.spiece.model",
+        model_url="https://raw.githubusercontent.com/google/gemma_pytorch/cb7c0152a369e43908e769eb09e1ce6043afe084/tokenizer/gemma3_cleaned_262144_v2.spiece.model",
         model_hash=(
             "1299c11d7cf632ef3b4e11937501358ada021bbdf7c47638d13c0ee982f2e79c"
         ),

google/genai/tests/local_tokenizer/test_local_tokenizer.py

@@ -37,7 +37,7 @@ def setUp(self):
     self.mock_tokenizer = MagicMock()
     self.mock_get_sentencepiece.return_value = self.mock_tokenizer
 
-    self.tokenizer = local_tokenizer.LocalTokenizer(model_name='gemini-2.5-flash')
+    self.tokenizer = local_tokenizer.LocalTokenizer(model_name='gemini-3-pro-preview')
 
   def tearDown(self):
     patch.stopall()