github: workflow: Test both MIPSBE and MIPSLE

Author: shaymargolis

.github/workflows/python-app.yml

@@ -33,4 +33,5 @@ jobs:
         flake8 . --count --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
-        pytest
+        pytest --compiler-arch=mipsbe
+        pytest --compiler-arch=mipsle