fix: nest generic test arguments under arguments in integration tests

The shipped models were fixed in 78d73ea but the integration test YAML
files were missed, causing MissingArgumentsPropertyInGenericTestDeprecation
warnings on dbt-core >= 1.11.

Closes #569

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: shauneccles

integration_tests/models/dbt_project_evaluator_schema_tests/core.yml

@@ -26,7 +26,8 @@ models:
       - name: model_type
         data_tests: 
           - dbt_utils.expression_is_true:
-              expression: "= 'base'"
+              arguments:
+                expression: "= 'base'"
               config:
                 where: "resource_name = 'base_model_10'"
 

integration_tests/models/dbt_project_evaluator_schema_tests/graph.yml

@@ -53,9 +53,10 @@ models:
     description: "Staging model from the graph variable, one record per column resource."
     data_tests:
       - dbt_utils.unique_combination_of_columns:
-          combination_of_columns:
-            - node_unique_id
-            - name
+          arguments:
+            combination_of_columns:
+              - node_unique_id
+              - name
 
   - name: stg_sources
     description: "Staging model from the graph variable, one record per source resource."
@@ -75,7 +76,8 @@ models:
       - name: model_type 
         data_tests:
           - accepted_values:
-              values: "{{ var('model_types') }}"
+              arguments:
+                values: "{{ var('model_types') }}"
 
   - name: stg_naming_convention_prefixes
     description: "This table shows one record for each accepted model prefix for each model type (staging, intermediate, marts) from the provided variables"
@@ -88,4 +90,5 @@ models:
       - name: model_type 
         data_tests:
           - accepted_values:
-              values: "{{ var('model_types') }}"
+              arguments:
+                values: "{{ var('model_types') }}"