Update python-test.yml

.github/workflows/python-test.yml

@@ -50,7 +50,7 @@ jobs:
 
       # Create the conda environment
       - name: Create conda environment
-        run: conda create -n timex -c conda-forge -c cmutel brightway25 bw_temporalis matplotlib seaborn 
+        run: conda create -n timex -c conda-forge -c cmutel -c diepers brightway25 bw_temporalis dynamic_characterization matplotlib seaborn 
 
       # Install testing dependencies from pyproject.toml
       - name: Install testing dependencies