chore: improve tests for backward compatibility

.phpunit.result.cache

@@ -1 +1 @@
-{"version":1,"defects":{"RequiredFieldsTest::test_get_required_fields_for_parent_model":5,"RequiredFieldsTest::test_get_required_fields_in_order":5,"RequiredFieldsTest::test_get_required_fields_for_another_parent_model":5,"RequiredFieldsTest::test_get_required_fields_for_child_model":5},"times":{"RequiredFieldsTest::test_get_required_fields_for_parent_model":0.003,"RequiredFieldsTest::test_get_required_fields_in_order":0.006,"RequiredFieldsTest::test_get_required_fields_for_another_parent_model":0.062,"RequiredFieldsTest::test_get_required_fields_for_child_model":0.003}}
+{"version":1,"defects":{"RequiredFieldsTest::test_get_required_fields_for_parent_model":5,"RequiredFieldsTest::test_get_required_fields_in_order":5,"RequiredFieldsTest::test_get_required_fields_for_another_parent_model":5,"RequiredFieldsTest::test_get_required_fields_for_child_model":5},"times":{"RequiredFieldsTest::test_get_required_fields_for_parent_model":0.002,"RequiredFieldsTest::test_get_required_fields_in_order":0.142,"RequiredFieldsTest::test_get_required_fields_for_another_parent_model":0.005,"RequiredFieldsTest::test_get_required_fields_for_child_model":0.003}}

composer.json

@@ -35,7 +35,7 @@
         "illuminate/contracts": "^11.0||^10.0||^9.0||^8.0||^7.0||^6.0||^5.0"
     },
     "require-dev": {
-        "nunomaduro/collision": "^8.1.1||^7.10.0||^6.0||^5.0||^4.0",
+        "nunomaduro/collision": "^8.1.1||^7.10.0||^6.0||^5.0||^4.0||^3.2",
         "orchestra/testbench": "^9.0.0||^8.22.0||^7.0||^6.0||^5.0||^4.0"
     },
     "autoload": {