chore(deps-dev): bump the development group across 1 directory with 4 updates

Bumps the development group with 4 updates in the / directory: [eslint-plugin-unicorn](https://github.com/sindresorhus/eslint-plugin-unicorn), [jest](https://github.com/jestjs/jest/tree/HEAD/packages/jest), [jest-environment-jsdom](https://github.com/jestjs/jest/tree/HEAD/packages/jest-environment-jsdom) and [prettier-plugin-svelte](https://github.com/sveltejs/prettier-plugin-svelte).


Updates `eslint-plugin-unicorn` from 64.0.0 to 68.0.0
- [Release notes](https://github.com/sindresorhus/eslint-plugin-unicorn/releases)
- [Commits](sindresorhus/eslint-plugin-unicorn@v64.0.0...v68.0.0)

Updates `jest` from 30.3.0 to 30.4.2
- [Release notes](https://github.com/jestjs/jest/releases)
- [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jestjs/jest/commits/v30.4.2/packages/jest)

Updates `jest-environment-jsdom` from 30.3.0 to 30.4.1
- [Release notes](https://github.com/jestjs/jest/releases)
- [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jestjs/jest/commits/v30.4.1/packages/jest-environment-jsdom)

Updates `prettier-plugin-svelte` from 3.5.2 to 4.1.1
- [Release notes](https://github.com/sveltejs/prettier-plugin-svelte/releases)
- [Changelog](https://github.com/sveltejs/prettier-plugin-svelte/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/prettier-plugin-svelte/compare/v3.5.2...prettier-plugin-svelte@4.1.1)

---
updated-dependencies:
- dependency-name: eslint-plugin-unicorn
  dependency-version: 68.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: development
- dependency-name: jest
  dependency-version: 30.4.2
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development
- dependency-name: jest-environment-jsdom
  dependency-version: 30.4.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development
- dependency-name: prettier-plugin-svelte
  dependency-version: 4.1.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -48,15 +48,15 @@
     "eslint-plugin-simple-import-sort": "^13.0.0",
     "eslint-plugin-svelte": "^3.5.1",
     "eslint-plugin-testing-library": "^7.1.1",
-    "eslint-plugin-unicorn": "^64.0.0",
+    "eslint-plugin-unicorn": "^68.0.0",
     "expect-type": "^1.2.1",
     "globals": "^17.0.0",
     "happy-dom": "^20.0.11",
-    "jest": "30.3.x",
-    "jest-environment-jsdom": "30.3.x",
+    "jest": "30.4.x",
+    "jest-environment-jsdom": "30.4.x",
     "jsdom": "^29.0.1",
     "prettier": "^3.5.3",
-    "prettier-plugin-svelte": "^3.3.3",
+    "prettier-plugin-svelte": "^4.1.1",
     "remark-cli": "^12.0.1",
     "remark-code-import": "^1.2.0",
     "remark-toc": "^9.0.0",