Bump Imageflow.Server in /examples/Imageflow.Server.ExampleDocker

Bumps [Imageflow.Server](https://github.com/imazen/imageflow-dotnet-server) from 0.7.9 to 0.8.2.
- [Release notes](https://github.com/imazen/imageflow-dotnet-server/releases)
- [Commits](v0.7.9...v0.8.2)

---
updated-dependencies:
- dependency-name: Imageflow.Server
  dependency-type: direct:production
...

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

examples/Imageflow.Server.ExampleDocker/Imageflow.Server.ExampleDocker.csproj

@@ -5,7 +5,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Imageflow.Server" Version="0.7.9" />
+      <PackageReference Include="Imageflow.Server" Version="0.8.2" />
     </ItemGroup>
 
     <ItemGroup>