Fix build.

Author: CollinAlpert

.github/workflows/post-push.yml

@@ -5,8 +5,7 @@ on:
   workflow_dispatch:
   push:
     paths:
-      - '**.cs'
-      - '**.csproj'
+      - 'MailSort.csproj'
     branches:
       - master
 
@@ -21,7 +20,7 @@ jobs:
       - name: Setup .NET Core SDK
         uses: actions/setup-dotnet@v3
         with:
-          global-json-file: csharp/global.json
+          global-json-file: global.json
 
       - name: Build project
         run: dotnet build