Update conda.yml

Author: wind23

.github/workflows/conda.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [ubuntu-latest, windows-latest, macos-14]
+        platform: [ubuntu-latest, windows-2019, macos-14]
         python-version: ["3.9", "3.12"]
 
     runs-on: ${{ matrix.platform }}