fix linting with mypy + precommit? (#10945)

.github/workflows/unit_test.yml

.pre-commit-config.yaml

CHANGELOG.md

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

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

llama-index-core/storage/default__vector_store.json

llama-index-core/storage/docstore.json

llama-index-core/storage/graph_store.json

llama-index-core/storage/image__vector_store.json

llama-index-core/storage/index_store.json

llama-index-core/storage/object_node_mapping.pickle

...eaders-file/llama_index/readers/file/unstructured/base.py

...integrations/readers/llama-index-readers-genius/README.md

...-readers-github/llama_index/readers/github/issues/base.py

...x-readers-google/llama_index/readers/google/drive/base.py

...x-readers-google/llama_index/readers/google/gmail/base.py

...-integrations/readers/llama-index-readers-memos/README.md

.../readers/llama-index-readers-microsoft-onedrive/README.md

...t-onedrive/llama_index/readers/microsoft_onedrive/base.py

...oft-outlook/llama_index/readers/microsoft_outlook/base.py