fix artifact collision due to missing python version in name

.github/workflows/ci.yml

@@ -34,6 +34,6 @@ jobs:
     - name: Upload artifact
       uses: actions/upload-artifact@v4
       with:
-        name: build-artifact
+        name: b2access-probe-py${{ matrix.python-version }}
         path: '*.tar.gz'
         if-no-file-found: 'error'