add no color to backup tests

Author: bckohan

django_typer/tests/test_backup_example.py

@@ -25,7 +25,7 @@ def tearDown(self) -> None:
     def test_base_backup(self):
         lines = (
             run_command(
-                "backup", "--settings", "django_typer.tests.settings.backup", "list"
+                "backup", "--no-color", "--settings", "django_typer.tests.settings.backup", "list"
             )[0]
             .strip()
             .splitlines()[1:]
@@ -56,6 +56,7 @@ def test_inherit_backup(self):
             line.strip()
             for line in run_command(
                 "backup",
+                "--no-color",
                 "--settings",
                 "django_typer.tests.settings.backup_inherit",
                 "list",
@@ -89,7 +90,7 @@ def test_extend_backup(self):
         lines = [
             line.strip()
             for line in run_command(
-                "backup", "--settings", "django_typer.tests.settings.backup_ext", "list"
+                "backup", "--no-color", "--settings", "django_typer.tests.settings.backup_ext", "list"
             )[0]
             .strip()
             .splitlines()[1:]