Update .Net Core SDK from 2.2.103 to 2.2.104 (latest patch) (PowerShell#1158)

Author: bergmeister

README.md

@@ -105,7 +105,7 @@ Note: the PSScriptAnalyzer Chocolatey package is provided and supported by the c
 
 #### Requirements
 
-* [.NET Core 2.2.103 SDK](https://www.microsoft.com/net/download/dotnet-core/2.2#sdk-2.2.103) or newer patch release
+* [.NET Core 2.2.104 SDK](https://www.microsoft.com/net/download/dotnet-core/2.2#sdk-2.2.104) or newer patch release
 * [PlatyPS 0.9.0 or greater](https://github.com/PowerShell/platyPS/releases)
 * Optionally but recommended for development: [Visual Studio 2017](https://www.visualstudio.com/downloads/)
 

global.json

@@ -1,5 +1,5 @@
 {
     "sdk": {
-        "version": "2.2.103"
+        "version": "2.2.104"
     }
 }