Modify artifact upload path for robot tests

Update artifact upload path to include specific test files.

Author: petschki

.github/workflows/coredev-robot-tests.yml

@@ -106,5 +106,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: robot-results
-          path: tests/parts/tests/
+          path: |
+            test_*
+            robot_*
           if-no-files-found: ignore