7.5.1 / 2023-09-11

• fix: set default value for _update when no update object is provided and versionKey is set to false #13795 #13783 MohOraby
• fix: avoid unexpected error when accessing null array element on discriminator array when populating #13716 ZSabakh
• types(schematypes): use DocType for instance method this #13822 #13800 pshaddel
• types: remove duplicated 'exists' method in Model interface in models.d.ts #13818 ohzeno
• docs(model): replace outdated docs on deprecated findOneAndUpdate() overwrite option #13821 #13715
• docs: add example of using virtuals.pathsToSkip option for toObject() and toJSON() #13798 RobertHunter-Pluto