Bump SharpZipLib from 0.86.0 to 1.3.3 in /TestSite

Bumps [SharpZipLib](https://github.com/icsharpcode/SharpZipLib) from 0.86.0 to 1.3.3.
- [Release notes](https://github.com/icsharpcode/SharpZipLib/releases)
- [Changelog](https://github.com/icsharpcode/SharpZipLib/blob/master/docs/Changes.txt)
- [Commits](https://github.com/icsharpcode/SharpZipLib/commits/v1.3.3)

---
updated-dependencies:
- dependency-name: SharpZipLib
  dependency-type: direct:production
...

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

Author: dependabot[bot]

TestSite/packages.config

@@ -51,7 +51,7 @@
   <package id="Serilog.Sinks.Async" version="1.3.0" targetFramework="net472" />
   <package id="Serilog.Sinks.File" version="4.0.0" targetFramework="net472" />
   <package id="Serilog.Sinks.Map" version="1.0.0" targetFramework="net472" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net472" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net472" />
   <package id="Superpower" version="2.0.0" targetFramework="net472" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.4.1" targetFramework="net472" />
   <package id="System.Threading.Tasks.Dataflow" version="4.9.0" targetFramework="net472" />