fixup! fixup! [IMP] account_edi_simple_pdf: increase test coverage

Author: hbrunn

account_edi_simple_pdf/tests/test_invoice_import.py

@@ -544,9 +544,8 @@ def _complete_import_specific_method(self, method):
         self.test_complete_import()
 
     def test_specific_python_methods(self):
-        # test only pure-pdf methods
-        # because we are sure they work on the Github test environment
         self._complete_import_specific_method("pypdf")
+        self._complete_import_specific_method("pymupdf")
 
     def test_test_run(self):
         """