3.8.0rc3

New Features

• LLM Observability: add processor capability to process span inputs and outputs. See usage documentation [here](https://docs.datadoghq.com/llm_observability/setup/sdk/python/#span-processing).

Bug Fixes

• tracing: Fixes an issue where truncation of span attributes longer than 25000 characters would not consistently count the size of UTF-8 multibyte characters, leading to a unicode string is too large error.