Bump postcss-html from 1.5.0 to 1.6.0 (#7466)

Bumps [postcss-html](https://github.com/ota-meshi/postcss-html) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/ota-meshi/postcss-html/releases)
- [Commits](ota-meshi/postcss-html@v1.5.0...v1.6.0)

---
updated-dependencies:
- dependency-name: postcss-html
  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>

package.json

@@ -232,7 +232,7 @@
     "np": "^9.2.0",
     "npm-run-all": "^4.1.5",
     "patch-package": "^8.0.0",
-    "postcss-html": "^1.5.0",
+    "postcss-html": "^1.6.0",
     "postcss-import": "^16.0.0",
     "postcss-less": "^6.0.0",
     "postcss-sass": "^0.5.0",