Install brotli in base env.

See https://stackoverflow.com/questions/61881121/anaconda-error-module-brotli-has-no-attribute-error
for rationale.

Author: oleksandr-pavlyk

.github/workflows/conda-package.yml

@@ -252,9 +252,10 @@ jobs:
           )
           SET "TEST_DEPENDENCIES=pytest pytest-cov cython"
           conda install ${{ env.PACKAGE_NAME }}=%PACKAGE_VERSION% %TEST_DEPENDENCIES% python=${{ matrix.python }} -c ${{ env.workdir }}/channel ${{ env.CHANNELS }}
-      - name: Report content of test environemtn
+      - name: Report content of test environment
         shell: cmd /C CALL {0}
         run: |
+          pip install --no-cache-dir brotli
           echo "Value of CONDA enviroment variable was: " %CONDA%
           conda list
       - name: Add library