feat: update sort-package-json to 12 (#680)

## PR Checklist

-   [x] Addresses an existing open issue: fixes #679
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Straightforward bump. Look at all those `pnpm-lock.yaml` removals! 🔪

Author: JoshuaKGoldberg

package.json

@@ -64,7 +64,7 @@
 		"package-json-validator": "^0.7.0",
 		"semver": "^7.5.4",
 		"sort-object-keys": "^1.1.3",
-		"sort-package-json": "^1.57.0",
+		"sort-package-json": "^2.12.0",
 		"validate-npm-package-name": "^6.0.0"
 	},
 	"devDependencies": {