build(dev-deps): bump @prettier/plugin-xml from 1.0.1 to 1.2.0

Bumps [@prettier/plugin-xml](https://github.com/prettier/plugin-xml) from 1.0.1 to 1.2.0.
- [Release notes](https://github.com/prettier/plugin-xml/releases)
- [Changelog](https://github.com/prettier/plugin-xml/blob/main/CHANGELOG.md)
- [Commits](prettier/plugin-xml@v1.0.1...v1.2.0)

---
updated-dependencies:
- dependency-name: "@prettier/plugin-xml"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
     "vuepress": "^1.9"
   },
   "devDependencies": {
-    "@prettier/plugin-xml": "^1.0.1",
+    "@prettier/plugin-xml": "^1.2.0",
     "husky": "^5.1.3",
     "lint-staged": "^10.5.4",
     "prettier": "^2.3.1",