chore(deps-dev): bump @guardian/eslint-config from 11.0.0 to 12.0.1

Bumps [@guardian/eslint-config](https://github.com/guardian/csnx/tree/HEAD/libs/@guardian/eslint-config) from 11.0.0 to 12.0.1.
- [Release notes](https://github.com/guardian/csnx/releases)
- [Changelog](https://github.com/guardian/csnx/blob/main/libs/@guardian/eslint-config/CHANGELOG.md)
- [Commits](https://github.com/guardian/csnx/commits/@guardian/[email protected]/libs/@guardian/eslint-config)

---
updated-dependencies:
- dependency-name: "@guardian/eslint-config"
  dependency-version: 12.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -12,7 +12,7 @@
     "packages/*"
   ],
   "devDependencies": {
-    "@guardian/eslint-config": "11.0.0",
+    "@guardian/eslint-config": "12.0.1",
     "@guardian/prettier": "8.0.1",
     "@guardian/tsconfig": "1.0.0",
     "@jest/globals": "30.2.0",