feat(google-vertex): update model YAMLs [bot]

providers/google-vertex/google/gemma-4-26b-a4b-it-maas.yaml

@@ -1,2 +1,32 @@
-mode: unknown
-model: google/gemma-4-26b-a4b-it-maas
+costs:
+    - input_cost_per_token: 1.5e-7
+      output_cost_per_token: 6.e-7
+      region: global
+features:
+    - function_calling
+    - structured_output
+    - system_messages
+limits:
+    context_window: 256000
+    max_input_tokens: 256000
+    max_output_tokens: 128000
+    max_tokens: 128000
+modalities:
+    input:
+        - text
+        - image
+        - pdf
+    output:
+        - text
+mode: chat
+model: gemma-4-26b-a4b-it-maas
+params:
+    - key: max_tokens
+      maxValue: 128000
+sources:
+    - https://docs.cloud.google.com/vertex-ai/generative-ai/docs/maas/google/gemma-4-26b-a4b-it
+    - https://ai.google.dev/gemma/docs/core/model_card_4
+status: preview
+supportedModes:
+    - chat
+thinking: true