Move Google gemini-2.0-flash to gemini-3.6-flash (gemini-2.0-flash was switched off June 1)

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📥 Pull Request

📘 Description
Google switched off gemini-2.0-flash on June 1, 2026 (details: https://ai.google.dev/gemini-api/docs/deprecations). This left code and docs in this repo referencing the now-shutdown model, which would fail.

This PR updates gemini-2.0-flash → gemini-3.6-flash in:

• examples/google_adk/sse_function_call_example.py:38 (MODEL_NAME passed to LlmAgent)
• docs/v2/examples/google_adk.mdx (line 128)
• docs/v2/integrations/google_adk.mdx (line 77)

And updates gemini-2.0-flash-001 → gemini-3.6-flash in two code examples in:

• docs/v2/integrations/google_generative_ai.mdx (lines 72, 89)

🧪 Testing
Inconclusive: tests failed before this change too, with ModuleNotFoundError: No module named 'requests_mock', so they don't confirm or refute this change.

ImportError while loading conftest '/work/tests/unit/conftest.py'.
tests/unit/conftest.py:4: in <module>
    import requests_mock
E   ModuleNotFoundError: No module named 'requests_mock'

• This pull request was generated or assisted by AI

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Prepared with YakBarber, a tool I'm building that updates code when an API changes, and reviewed by me before sending. It was sent once, to this repository only; if it isn't useful, feel free to close it.

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YakBarber found 5 other upcoming provider changes in this repository: https://yakbarber.com/check/AgentOps-AI/agentops

Check the whole repository yourself: npx yakbarber check lists every AI model and API it calls that is being retired, with the date and the company's own words. Free, read-only, runs locally (source).