Bump Microsoft.Owin in /PipeProxyRestServer/PipeProxyRestServer

Bumps [Microsoft.Owin](https://github.com/aspnet/AspNetKatana) from 2.0.2 to 4.2.2.
- [Release notes](https://github.com/aspnet/AspNetKatana/releases)
- [Commits](https://github.com/aspnet/AspNetKatana/compare/v2.0.2...v4.2.2)

---
updated-dependencies:
- dependency-name: Microsoft.Owin
  dependency-type: direct:production
...

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

PipeProxyRestServer/PipeProxyRestServer/packages.config

@@ -4,7 +4,7 @@
   <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.Owin" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.OwinSelfHost" version="5.2.3" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="2.0.2" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.2.2" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.HttpListener" version="2.0.2" targetFramework="net45" />
   <package id="Microsoft.Owin.Hosting" version="2.0.2" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />