Fix download-artifact parameters for pr-arm32-test

Signed-off-by: Krystian Hebel <khebel@antmicro.com>

Author: krystian-hebel

.github/workflows/pull-request.yml

@@ -102,7 +102,9 @@ jobs:
 
       - uses: actions/download-artifact@v4
         with:
-          path: ./
+          path: artifact/
+          pattern: artifact-*
+          merge-multiple: true
 
       - name: test
         uses: ./