Fix u-boot path for artifacts

Signed-off-by: Loïc Minier <[email protected]>

Author: lool

.github/workflows/u-boot.yml

@@ -89,6 +89,7 @@ jobs:
       - name: Save URL of build results as an artifact
         uses: actions/upload-artifact@v4
         with:
-          path: u-boot-rb1.dir
-          path: u-boot-rb1.url
+          path: |
+           u-boot-rb1.dir
+           u-boot-rb1.url