Update dependency @sindresorhus/tsconfig to v6

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
   "devDependencies": {
     "@ava/typescript": "5.0.0",
     "@biomejs/biome": "1.8.2",
-    "@sindresorhus/tsconfig": "5.0.0",
+    "@sindresorhus/tsconfig": "6.0.0",
     "ava": "6.1.3",
     "openapi-typescript": "7.0.0",
     "typescript": "5.5.2"