docs: dynamic copyright year in API ref (#30944)
- [x] **PR title:**
`docs: make footer year dynamic in API reference docs`
- [x] **PR message:**
- **Description:**
Update `docs/api_reference/conf.py` to make the copyright year dynamic
(on
[https://python.langchain.com/api_reference/](https://python.langchain.com/api_reference/)).
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Co-authored-by: Chester Curme <chester.curme@gmail.com>
