use pytest instead of nose

Author: sjanssen2

.github/workflows/qiita-plugin-ci.yml

@@ -29,13 +29,13 @@ jobs:
           conda create --yes -n qiita-files python=${{ matrix.python-version }} h5py pandas scipy numpy
           conda activate qiita-files
           pip install .
-          pip install sphinx sphinx-bootstrap-theme nose-timer codecov Click
+          pip install sphinx sphinx-bootstrap-theme pytest-cov codecov Click
 
       - name: Main tests
         shell: bash -l {0}
         run: |
           conda activate qiita-files
-          nosetests --with-doctest --with-coverage --cover-package=qiita_files
+          pytest --with-doctest --cov=qiita_files --cov-report=lcov
 
   lint:
     runs-on: ubuntu-latest