Update dependency @ianwalter/eslint-config to v6

Author: renovate-bot

package.json

@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "@changesets/cli": "^2.11.2",
-    "@ianwalter/eslint-config": "^5.4.0",
+    "@ianwalter/eslint-config": "^6.0.0",
     "@ianwalter/renovate-config": "^1.4.2"
   },
   "eslintConfig": {