refactor: enhance pytest command with verbosity and parallel execution

Author: FedericoTartarini

.github/workflows/python.yml

@@ -42,4 +42,4 @@ jobs:
       - name: Test Clima
         run: |-
           cd tests
-          pipenv run pytest --base-url=http://127.0.0.1:8080
+          pipenv run pytest --base-url=http://127.0.0.1:8080 -vv -n 2

docs/contributing/contributing.md

@@ -133,7 +133,7 @@ Then, from the root directory, run tests using pytest:
 ```bash
 cd tests
 
-pipenv run pytest --base-url=http://127.0.0.1:8080
+pipenv run pytest --base-url=http://127.0.0.1:8080 -vv -n 2
 ```
 
 ## Submitting changes