chore(deps): update dependency google-genai to v2

Author: renovate[bot]

pyproject.toml

@@ -50,7 +50,7 @@ dependencies = [
 # LLM providers
 anthropic = ["anthropic>=0.40,<1"]
 cohere = ["cohere>=6,<7"]
-google = ["google-genai>=1,<2"]
+google = ["google-genai>=2,<3"]
 instructor = ["instructor>=1,<2"]
 ollama = ["ollama>=0.3,<1"]
 openai = ["openai>=1,<3", "tiktoken>=0.8,<1"]