pip install gimli.units; fix path to heat.yaml

Author: mcflugen

.github/workflows/test.yml

@@ -43,9 +43,7 @@ jobs:
 
       - name: Run bmi-test
         run: |
-          pip install model-metadata
-          conda install gimli.units -c conda-forge
-          pip install bmi-tester
+          pip install model-metadata gimli.units bmi-tester
           pip install .
           bmi-test heat:BmiHeat --config-file=${GITHUB_WORKSPACE}/examples/heat.yaml --root-dir=examples -vvv