posthog-v7.50.0

Minor changes

• 7db5105 Prompts.get_all(label="production") fetches every prompt that carries a label in one request and stores them in the prompt cache, so later get(name, label=...) calls are cache hits. Apps with many prompts no longer need one request per prompt per cache cycle. Against a PostHog server that does not support labels on the prompt list endpoint yet, the call fails with a clear error instead of caching wrong versions. — Thanks @jurajmajerik!