feat(oxlint-config-smarthr): eslint-plugin-smarthrを6.15.0に更新 (#1317)

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: AtsushiM

packages/oxlint-config-smarthr/index.js

@@ -217,8 +217,10 @@ const config = {
     'eslint-plugin-smarthr/a11y-trigger-has-button': 'error',
     'eslint-plugin-smarthr/best-practice-for-async-current-target': 'error',
     'eslint-plugin-smarthr/best-practice-for-button-element': 'error',
+    'eslint-plugin-smarthr/best-practice-for-consecutive-definition-list': 'warn', // TODO: 2026/05にwarn化。問題なければerrorに変更予定
     'eslint-plugin-smarthr/best-practice-for-date': 'error',
     'eslint-plugin-smarthr/best-practice-for-data-test-attribute': 'off',
+    'eslint-plugin-smarthr/best-practice-for-default-props': 'warn', // TODO: 2026/05にwarn化。問題なければerrorに変更予定
     'eslint-plugin-smarthr/best-practice-for-interactive-element': 'error',
     'eslint-plugin-smarthr/best-practice-for-layouts': 'error',
     'eslint-plugin-smarthr/best-practice-for-nested-attributes-array-index': 'error',