pymongo only supports 3.7+ where dictionaries are officially ordered. We should remove the documentation regarding unordered dictionaries. For example:

• https://pymongo.readthedocs.io/en/stable/faq.html#key-order-in-subdocuments-why-does-my-query-work-in-the-shell-but-not-pymongo
• https://pymongo.readthedocs.io/en/stable/api/bson/son.html?highlight=order#module-bson.son
• https://pymongo.readthedocs.io/en/stable/examples/aggregation.html?highlight=order#aggregation-framework