Update dependency Microsoft.EntityFrameworkCore to v3.1.12 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
Microsoft.EntityFrameworkCore (source)	nuget	patch	3.1.11 -> 3.1.12

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Release Notes

dotnet/efcore

### [`v3.1.12`](https://togithub.com/dotnet/efcore/releases/v3.1.12) [Compare Source](https://togithub.com/dotnet/efcore/compare/v3.1.11...v3.1.12) - [Release Notes](https://togithub.com/dotnet/core/blob/master/release-notes/3.1/3.1.12/3.1.12.md) - [Download and Install](https://www.microsoft.com/net/download/dotnet-core/3.1) ##### Repos - [Core](https://togithub.com/dotnet/core/releases/tag/v3.1.12)

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