Remove tight coupling in ddev test that started failing after new packaging release (DataDog#22395)

Author: AAraKKe

ddev/tests/cli/validate/test_licenses.py

@@ -86,6 +86,6 @@ def test_invalid_requirement(repository, ddev, helpers):
 
     result = ddev("validate", "licenses")
 
-    expected_error_output = 'Detected InvalidRequirement error in agent_requirements.in:1 Expected end'
+    expected_error_output = 'InvalidRequirement error'
     assert expected_error_output in helpers.remove_trailing_spaces(result.output)
     assert 'aerospike==^4.0.0' in helpers.remove_trailing_spaces(result.output)