Bump eslint from 8.45.0 to 9.21.0 in /typescript/ethers-v6

Bumps [eslint](https://github.com/eslint/eslint) from 8.45.0 to 9.21.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.45.0...v9.21.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

typescript/ethers-v6/package.json

@@ -7,7 +7,7 @@
     "@types/node": "^22.10.5",
     "@typescript-eslint/eslint-plugin": "^8.25.0",
     "@typescript-eslint/parser": "^8.22.0",
-    "eslint": "^8.45.0",
+    "eslint": "^9.21.0",
     "typescript": "^5.7.3"
   },
   "files": [