fix: Add gemini 3.7

PiperOrigin-RevId: 964222860

Author: MarkDaoust

google/genai/_gaos/types/interactions/model.py

@@ -59,6 +59,8 @@
         "gemini-3.5-flash",
         # Our most intelligent model for sustained frontier performance in agentic and coding tasks.
         "gemini-3.6-flash",
+        # Our most intelligent model for sustained frontier performance in agentic and coding tasks.
+        "gemini-3.7-flash",
         # Our low-latency, music generation model optimized for high-fidelity audio clips and precise rhythmic control.
         "lyria-3-clip-preview",
         # Our advanced, full-song generative model with deep compositional understanding, optimized for precise structural control and complex transitions across diverse musical styles.