Update dotnet-ci.yml

Author: 13584452567

.github/workflows/dotnet-ci.yml

@@ -8,11 +8,8 @@ on:
 
 jobs:
   build:
-    name: Build & Test on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+    name: Build & Test 
+    runs-on: macos-latest
 
     steps:
     - uses: actions/checkout@v4