langchain-exa==0.3.0

Changes since langchain-exa==0.2.1

exa docs and python package update (#31307)
packaging: remove Python upper bound for langchain and co libs (#31025)
partners[lint]: run pyupgrade to get code in line with 3.9 standards (#30781)
multiple: fix uv path deps (#29790)
infra: add UV_FROZEN to makefiles (#29642)
infra: migrate to uv (#29566)