Update Serilog.Settings.AppSettings.csproj

Update version. Miner to 2.2.0

Author: generik0

src/Serilog.Settings.AppSettings/Serilog.Settings.AppSettings.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Description>XML configuration (System.Configuration &lt;appSettings&gt;) support for Serilog.</Description>
-    <VersionPrefix>2.1.4</VersionPrefix>
+    <VersionPrefix>2.2.0</VersionPrefix>
     <Authors>Serilog Contributors</Authors>
     <TargetFrameworks>net45;netstandard2.0</TargetFrameworks>
     <AssemblyName>Serilog.Settings.AppSettings</AssemblyName>