chore(deps): update dependency typescript to v6 (#2070)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -24,7 +24,7 @@
     "textlint-rule-preset-ja-technical-writing": "12.0.2",
     "textlint-rule-terminology": "5.2.16",
     "tsc": "2.0.4",
-    "typescript": "5.9.3"
+    "typescript": "6.0.2"
   },
   "engines": {
     "node": "24.14.0"