Bump Nancy from 1.4.4 to 2.0.0

Bumps [Nancy](https://github.com/NancyFx/Nancy) from 1.4.4 to 2.0.0.
- [Release notes](https://github.com/NancyFx/Nancy/releases)
- [Commits](NancyFx/Nancy@v1.4.4...v2.0.0)

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

Author: dependabot-support

packages.config

@@ -6,7 +6,7 @@
   <package id="jQuery" version="3.3.1" targetFramework="net452" />
   <package id="LiteDB" version="4.1.4" targetFramework="net452" />
   <package id="Multiformats.Base" version="1.2.1" targetFramework="net461" />
-  <package id="Nancy" version="1.4.4" targetFramework="net452" />
+  <package id="Nancy" version="2.0.0" targetFramework="net452" />
   <package id="Nancy.Hosting.Aspnet" version="1.4.1" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net452" />
   <package id="System.Runtime.Numerics" version="4.3.0" targetFramework="net461" />