Bump download-artifact action

Author: tvdijen

.github/workflows/php.yml

@@ -287,6 +287,6 @@ jobs:
       (needs.unit-tests-linux == 'success' && needs.coverage == 'skipped')
 
     steps:
-      - uses: geekyeggo/delete-artifact@v2
+      - uses: geekyeggo/delete-artifact@v4
         with:
           name: coverage-data