Fix/workflow 2023 (#89)

* fix artifact name related to update of actions/upload-artifact@v4

* split download in three options

* update download of wheels

.github/workflows/build_and_test.yml

@@ -76,7 +76,7 @@ jobs:
     - uses: actions/upload-artifact@v4
       if: github.event_name == 'release' || contains(github.ref, 'refs/heads/wheel')
       with:
-        name: artefacts
+        name: artefact-${{ matrix.os }}
         path: wheelhouse/
     - name: Install docs dependencies
       if:  (matrix.os == 'ubuntu-22.04') && (github.event_name == 'pull_request' || github.event_name == 'schedule' )
@@ -95,9 +95,13 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: Download all wheels
+      # downloading all three files into the wheelhouse
+      # all files are identical, so there will only be one file
       uses: actions/download-artifact@v4
       with:
         path: wheelhouse
+        pattern: artefact-*
+        merge-multiple: true
     - name: Put them all in the dist folder
       run: |
         mkdir dist