chore(deps): update devdependency textlint to v15

Author: renovate[bot]

package.json

@@ -8,7 +8,7 @@
     "textlint:fix": "yarn textlint --fix --format diff"
   },
   "devDependencies": {
-    "textlint": "^11.6.2",
+    "textlint": "^15.2.0",
     "textlint-filter-rule-whitelist": "^2.0.0",
     "textlint-rule-no-todo": "^2.0.1",
     "textlint-rule-preset-ja-spacing": "^2.0.1",