Fix Python version requirement and exclude BUILD files (#11267)

...index-packs-timescale-vector-autoretrieval/pyproject.toml

...ex-packs/llama-index-packs-trulens-eval-packs/poetry.lock

...packs/llama-index-packs-trulens-eval-packs/pyproject.toml

llama-index-packs/llama-index-packs-vanna/poetry.lock

llama-index-packs/llama-index-packs-vanna/pyproject.toml

llama-index-packs/llama-index-packs-vectara-rag/poetry.lock

...-index-packs/llama-index-packs-vectara-rag/pyproject.toml

...x-packs/llama-index-packs-voyage-query-engine/poetry.lock

...acks/llama-index-packs-voyage-query-engine/pyproject.toml

...x-packs/llama-index-packs-zephyr-query-engine/poetry.lock

...acks/llama-index-packs-zephyr-query-engine/pyproject.toml