fix(test): update flashBootType assertion to match enum value

The FLASHBOOT enum PR (#488) removed quotes from the GraphQL enum
value but didn't update the test assertion to match.

Author: deanq

tests/test_api/test_mutation_endpoints.py

@@ -42,4 +42,4 @@ def test_all_fields(self):
         self.assertIn("scalerValue: 5", result)
         self.assertIn("workersMin: 2", result)
         self.assertIn("workersMax: 4", result)
-        self.assertIn('flashBootType: "FLASHBOOT"', result)
+        self.assertIn("flashBootType: FLASHBOOT", result)