Updated build version number to 6.0.0 due to removal of .NET 4.0, 4.5, 4.5.2, 4.6 and 4.6.2

Author: cdmdotnet

.github/workflows/dotnetcore.yml

@@ -3,8 +3,8 @@ name: Build Core Framework
 on: [push]
 
 env:
-  nuGetVersionNumber: 5.3.0
-  nuGetFullVersionNumber: 5.3.0.${{ github.run_number }}
+  nuGetVersionNumber: 6.0.0
+  nuGetFullVersionNumber: 6.0.0.${{ github.run_number }}
 
 jobs:
   build:

.github/workflows/publish.yml

@@ -6,8 +6,8 @@ on:
   workflow_dispatch:
 
 env:
-  nuGetVersionNumber: 5.3.0
-  nuGetFullVersionNumber: 5.3.0.${{ github.run_number }}
+  nuGetVersionNumber: 6.0.0
+  nuGetFullVersionNumber: 6.0.0.${{ github.run_number }}
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs: