Bump Quartz.Serialization.Json from 3.8.0 to 3.8.1 in /src

Bumps [Quartz.Serialization.Json](https://github.com/quartznet/quartznet) from 3.8.0 to 3.8.1.
- [Release notes](https://github.com/quartznet/quartznet/releases)
- [Changelog](https://github.com/quartznet/quartznet/blob/main/changelog.md)
- [Commits](quartznet/quartznet@v3.8.0...v3.8.1)

---
updated-dependencies:
- dependency-name: Quartz.Serialization.Json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

src/IoTHub.Portal.Server/IoTHub.Portal.Server.csproj

@@ -70,7 +70,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="prometheus-net.AspNetCore" Version="8.2.1" />
     <PackageReference Include="Quartz.Extensions.Hosting" Version="3.8.0" />
-    <PackageReference Include="Quartz.Serialization.Json" Version="3.8.0" />
+    <PackageReference Include="Quartz.Serialization.Json" Version="3.8.1" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
     <PackageReference Include="UAParser" Version="3.1.47" />
   </ItemGroup>