TST(validator): improve readability of unit test

unittests/test_validation.py

@@ -82,7 +82,7 @@ def test_validation():
     r2.add_property(name="dateModified", value="2024-11-16")
 
     valres = validate([r1, r2], json)
-    assert valres[0][0]
+    assert valres[0][0] is True
     assert len(valres[0][1]) == 1
     assert valres[0][1][0] == json[0]
     assert len(valres[1][1]) == 0