[PR #10416/e92f1874 backport][3.11] Fix wheel download-artifact by setting merge-multiple (#10417)

**This is a backport of PR #10416 as merged into master
(e92f187).**

Should fix
https://github.com/aio-libs/aiohttp/actions/runs/13167811054/job/36753606142

Co-authored-by: J. Nick Koston <[email protected]>

Author: patchback[bot]

.github/workflows/ci-cd.yml

@@ -455,6 +455,7 @@ jobs:
       with:
         path: dist
         pattern: dist-*
+        merge-multiple: true
     - name: Collected dists
       run: |
         tree dist