ci(workflow): upgrade dotnetcore workflow to latest action versions

- Update actions/checkout from v2 to v4 for improved stability
- Upgrade actions/setup-dotnet from v1 to v4
- Change dotnet version specifier to 8.0.x for flexibility
- Modify nuget push command to use single asterisk wildcard pattern
- Remove redundant '--no-symbols true' flag to '--no-symbols'
- Retain nuget source addition step with existing credentials and config

Author: Kibnet

.github/workflows/dotnetcore.yml

@@ -13,18 +13,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Setup .NET Core
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.100
+        dotnet-version: 8.0.x
     - name: Install dependencies
       run: dotnet restore
     - name: Pack solution
       run: dotnet pack --configuration Release -o out --no-restore    
     - name: Push nuget packages to Nuget registry
-      run: dotnet nuget push ./out/**/*.nupkg --skip-duplicate --no-symbols true -k ${{secrets.NUGET_TOKEN}} -s https://api.nuget.org/v3/index.json
+      run: dotnet nuget push ./out/*.nupkg --skip-duplicate --no-symbols -k ${{secrets.NUGET_TOKEN}} -s https://api.nuget.org/v3/index.json
     - name: Add GitHub registry as nuget source
       run: dotnet nuget add source https://nuget.pkg.github.com/kibnet/index.json --name github --username kibnet --password ${{secrets.GITHUB_TOKEN}} --store-password-in-clear-text
     - name: Push nuget packages to GitHub registry
-      run: dotnet nuget push ./out/**/*.nupkg --skip-duplicate --no-symbols true -s "github"
+      run: dotnet nuget push ./out/*.nupkg --skip-duplicate --no-symbols -s "github"