update to .net6

.github/workflows/nuget-publish.yml

@@ -3,22 +3,22 @@ name: PublishNugetPackage
 on:
   push:
     tags:
-    - '*'
+      - "*"
 
 jobs:
   publish:
     name: Publish Project to Nuget
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - name: Setup .NET Core
-      uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '5.0.100'
-    - name: Publish
-      run: |
-        version=`git describe --tags`
-        dotnet build --configuration release -p:PackageVersion=$version
-        dotnet nuget push bin/release/Simcu.SimApi.$version.nupkg -k ${NUGET_APIKEY} -s https://www.nuget.org/api/v2/package
-      env:
-        NUGET_APIKEY: ${{ secrets.NUGET_APIKEY }}
+      - uses: actions/checkout@v1
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "6.0.100"
+      - name: Publish
+        run: |
+          version=`git describe --tags`
+          dotnet build --configuration release -p:PackageVersion=$version
+          dotnet nuget push bin/release/Simcu.SimApi.$version.nupkg -k ${NUGET_APIKEY} -s https://www.nuget.org/api/v2/package
+        env:
+          NUGET_APIKEY: ${{ secrets.NUGET_APIKEY }}