tests: check more sample rates & error propagation

[theomonnom]

• use different sample_rate for stt
• check propagation of errors & retry (mostly tts for now)
• run base on py3.9 and 3.12
• re-add anthropic to llm tests
• fix fal plugin not closing properly

[changeset-bot[bot]]

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Latest commit: a537272fe95a5a90ca8b8408a995006b91ea6d51

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