Bump Microsoft.EntityFrameworkCore.Relational and Pomelo.EntityFrameworkCore.MySql

Bumps [Microsoft.EntityFrameworkCore.Relational](https://github.com/dotnet/efcore) and [Pomelo.EntityFrameworkCore.MySql](https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql). These dependencies needed to be updated together.

Updates `Microsoft.EntityFrameworkCore.Relational` from 9.0.2 to 9.0.0
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](dotnet/efcore@v9.0.2...v9.0.0)

Updates `Pomelo.EntityFrameworkCore.MySql` from 9.0.0-preview.2.efcore.9.0.0 to 9.0.0-preview.3.efcore.9.0.0
- [Release notes](https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql/releases)
- [Commits](PomeloFoundation/Pomelo.EntityFrameworkCore.MySql@9.0.0-preview.2.efcore.9.0.0...9.0.0-preview.3.efcore.9.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.EntityFrameworkCore.Relational
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Pomelo.EntityFrameworkCore.MySql
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/EntityFrameworkCore.Generator.Core/EntityFrameworkCore.Generator.Core.csproj

@@ -17,7 +17,7 @@
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.3" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite" Version="9.0.3" />
     <PackageReference Include="Oracle.EntityFrameworkCore" Version="9.23.60" />
-    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="9.0.0-preview.2.efcore.9.0.0" />
+    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="9.0.0-preview.3.efcore.9.0.0" />
     <PackageReference Include="Pomelo.EntityFrameworkCore.MySql.NetTopologySuite" Version="9.0.0-preview.2.efcore.9.0.0" />
     <PackageReference Include="YamlDotNet" Version="16.3.0" />
   </ItemGroup>