v0.10.68 (#15557)

CHANGELOG.md

docs/docs/CHANGELOG.md

docs/docs/api_reference/embeddings/gigachat.md

docs/docs/api_reference/llms/gigachat.md

docs/mkdocs.yml

llama-index-core/llama_index/core/__init__.py

llama-index-core/llama_index/core/postprocessor/optimizer.py

llama-index-core/llama_index/core/utils.py

llama-index-core/pyproject.toml

poetry.lock

pyproject.toml