build(deps): update dependency mongoose to ^8.20.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
mongoose (source)	^8.20.1 -> ^8.20.2

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Release Notes

Automattic/mongoose (mongoose)

v8.20.2

Compare Source

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• fix(model): bump version if necessary after successful bulkSave() #​15809 #​15800
• fix(bulkWrite): pass overwriteImmutable option to castUpdate fixes #​15789 #​15782 #​15781
• types(schema): allow calling schema.static() with as TStatics #​15794 #​15780

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