Update build workflow to use project file for build

Author: sarul84

.github/workflows/build.yml

@@ -26,12 +26,9 @@ jobs:
       uses: actions/setup-dotnet@v4
       with:
         dotnet-version: '8.0.x'
-        
-    - name: List repo files
-      run: ls -R 
 
     - name: Restore dependencies
       run: dotnet restore PraKrish.GraphqlClient/Prakrishtha.GraphqlClient.sln
 
     - name: Build
-      run: dotnet build ..\GraphqlHttpClient\GraphqlHttpClient --configuration Release --no-restore
+      run: dotnet build PraKrish.GraphqlClient/GraphqlClient/GraphqlClient.csproj --configuration Release --no-restore