add fsspec to run-tests

Author: briangow

.github/workflows/run-tests.yml

@@ -41,6 +41,7 @@ jobs:
         run: |
           apt-get update
           apt-get install -y --no-install-recommends \
+                  python3-fsspec \
                   python3-matplotlib \
                   python3-numpy \
                   python3-pandas \