Bump Newtonsoft.Json from 12.0.2 to 13.0.1 in /Sourcecode/Song.WebSite

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 12.0.2 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@12.0.2...13.0.1)

---
updated-dependencies:
- dependency-name: Newtonsoft.Json
  dependency-type: direct:production
...

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

Sourcecode/Song.WebSite/packages.config

@@ -22,7 +22,7 @@
  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net461" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net461" />
  <package id="Modernizr" version="2.8.3" targetFramework="net461" />
- <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+ <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
  <package id="Portable.BouncyCastle" version="1.8.6.7" targetFramework="net461" />
  <package id="System.Buffers" version="4.4.0" targetFramework="net461" />
  <package id="System.Diagnostics.DiagnosticSource" version="4.6.0" targetFramework="net461" />