chore(deps): bump MailKit and MimeKit in /src

Bumps [MailKit](https://github.com/jstedfast/MailKit) and [MimeKit](https://github.com/jstedfast/MimeKit). These dependencies needed to be updated together.

Updates `MailKit` from 4.7.1.1 to 4.8.0
- [Changelog](https://github.com/jstedfast/MailKit/blob/master/ReleaseNotes.md)
- [Commits](jstedfast/MailKit@4.7.1.1...4.8.0)

Updates `MimeKit` from 4.7.1 to 4.8.0
- [Changelog](https://github.com/jstedfast/MimeKit/blob/master/ReleaseNotes.md)
- [Commits](jstedfast/MimeKit@4.7.1...4.8.0)

---
updated-dependencies:
- dependency-name: MailKit
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: MimeKit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/OA.Service/OA.Service.csproj

@@ -11,10 +11,10 @@
 		<PackageReference Include="FluentValidation" Version="11.10.0" />
 		<PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.10.0" />
 		<PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="11.1.0" />
-		<PackageReference Include="MailKit" Version="4.7.1.1" />
+		<PackageReference Include="MailKit" Version="4.8.0" />
 		<PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
 		<PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
-		<PackageReference Include="MimeKit" Version="4.7.1" />
+		<PackageReference Include="MimeKit" Version="4.8.0" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.8" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 	</ItemGroup>