build(deps-dev): bump prettier-plugin-pkg from 0.20.0 to 0.21.1 (#551)

Bumps [prettier-plugin-pkg](https://github.com/un-ts/prettier) from 0.20.0 to 0.21.1.
- [Release notes](https://github.com/un-ts/prettier/releases)
- [Changelog](https://github.com/un-ts/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/un-ts/prettier/compare/prettier-plugin-pkg@0.20.0...prettier-plugin-pkg@0.21.1)

---
updated-dependencies:
- dependency-name: prettier-plugin-pkg
  dependency-version: 0.21.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -99,7 +99,7 @@
     "lit-analyzer": "^2.0.3",
     "prettier": "^3.5.3",
     "prettier-plugin-organize-imports": "^4.1.0",
-    "prettier-plugin-pkg": "^0.20.0",
+    "prettier-plugin-pkg": "^0.21.1",
     "prettier-plugin-sh": "^0.17.2",
     "pwa-helpers": "^0.9.1",
     "redux": "^4.2.1",