Install pytest-remotedata as testing dependency

Author: bsipocz

.github/workflows/publish.yml

@@ -36,7 +36,7 @@ jobs:
       run: |
         cd ..
         python -m venv testenv
-        testenv/bin/pip install pytest pytest-doctestplus/dist/*.whl
+        testenv/bin/pip install pytest pytest-remotedata pytest-doctestplus/dist/*.whl
         testenv/bin/pytest pytest-doctestplus/tests --doctest-plus --doctest-rst
 
     - name: Publish distribution 📦 to PyPI