Bump SharpZipLib from 1.2.0 to 1.3.3 in /TestSite

Bumps [SharpZipLib](https://github.com/icsharpcode/SharpZipLib) from 1.2.0 to 1.3.3.
- [Release notes](https://github.com/icsharpcode/SharpZipLib/releases)
- [Changelog](https://github.com/icsharpcode/SharpZipLib/blob/master/docs/Changes.txt)
- [Commits](icsharpcode/SharpZipLib@v1.2.0...v1.3.3)

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

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

TestSite/packages.config

@@ -51,7 +51,7 @@
  <package id="Serilog.Sinks.Async" version="1.4.0" targetFramework="net472" />
  <package id="Serilog.Sinks.File" version="4.1.0" targetFramework="net472" />
  <package id="Serilog.Sinks.Map" version="1.0.1" targetFramework="net472" />
- <package id="SharpZipLib" version="1.2.0" targetFramework="net472" />
+ <package id="SharpZipLib" version="1.3.3" targetFramework="net472" />
  <package id="Superpower" version="2.3.0" targetFramework="net472" />
  <package id="System.Buffers" version="4.5.1" targetFramework="net472" />
  <package id="System.Diagnostics.DiagnosticSource" version="4.7.0" targetFramework="net472" />