Revert unnecessary change

Author: xperiandri

.github/workflows/copilot-setup-steps.yml

@@ -32,7 +32,7 @@ jobs:
         uses: actions/setup-dotnet@v5
         with:
           global-json-file: global.json
-          dotnet-version: 10.0.300
+          dotnet-version: 10.x
 
       - name: Restore dependencies
         run: |