Dependencies: Update server-side dependencies to latest patch or minor releases

[AndyButland]

Description

Updates all the server-side dependencies we can to the latest patch or minor, in preparation for 17.3 release.

Note that I opted not to upgrade MailKit as it has some breaking changes relating to nullability constraints.

[Copilot]

Pull request overview

This PR updates server-side dependencies to their latest patch or minor releases in preparation for the 17.3 release. The updates follow semantic versioning principles, containing only patch updates (e.g., 10.0.2 → 10.0.3) and minor updates (e.g., 6.1.0 → 6.2.0), which should maintain backward compatibility.

Changes:

• Updated Microsoft packages (ASP.NET Core, Entity Framework, Extensions) from 10.0.2 to 10.0.3
• Updated third-party packages including NPoco (6.1.0 → 6.2.0), MailKit (4.14.1 → 4.15.0), Markdig (0.44.0 → 0.45.0), Serilog (4.3.0 → 4.3.1), and Swashbuckle (10.1.0 → 10.1.4)
• Updated Microsoft.Extensions.Caching.Hybrid from 10.2.0 to 10.3.0

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
Directory.Packages.props	Updates central package versions for Microsoft packages (10.0.2 → 10.0.3), Microsoft.Extensions.Caching.Hybrid (10.2.0 → 10.3.0), and third-party packages (NPoco, MailKit, Markdig, Serilog, Swashbuckle)
tests/Directory.Packages.props	Updates test-specific Microsoft packages from 10.0.2 to 10.0.3 to align with main dependencies
src/Umbraco.Web.UI/Umbraco.Web.UI.csproj	Updates Microsoft.EntityFrameworkCore.Design from 10.0.0 to 10.0.3

[Zeegaan]

@AndyButland I release this PR is a little old by now, but we could upgrade Microsoft.NET.Test.Sdk too? 🤔

[AndyButland]

Yes, good spot. I've done that one too now.

[Zeegaan]

Looks good to me 🚀