only pack the install folder as artifact

Author: sdcb

.github/workflows/opencv.yml

@@ -80,7 +80,7 @@ jobs:
     - name: Make artifacts
       run: |
         mkdir artifacts
-        cp -r opencv/build/* artifacts
+        cp -r opencv/build/install/* artifacts
 
     - name: Upload Artifacts
       uses: actions/upload-artifact@v4