Bump Microsoft.EntityFrameworkCore from 8.0.8 to 8.0.10 in /docs/csharp/language-reference/compiler-messages/snippets/null-warnings in the dotnet group

Bump Microsoft.EntityFrameworkCore from 8.0.8 to 8.0.10 in /docs/csharp/language-reference/compiler-messages/snippets/null-warnings in the dotnet group #1690