build(deps-dev): bump postcss-discard-duplicates from 7.0.0 to 7.0.2

Bumps [postcss-discard-duplicates](https://github.com/cssnano/cssnano) from 7.0.0 to 7.0.2.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/postcss-discard-duplicates@7.0.0...postcss-discard-duplicates@7.0.2)

---
updated-dependencies:
- dependency-name: postcss-discard-duplicates
  dependency-version: 7.0.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

packages/component-library-css/package.json

@@ -120,7 +120,7 @@
   },
   "devDependencies": {
     "postcss": "8.4.38",
-    "postcss-discard-duplicates": "7.0.0",
+    "postcss-discard-duplicates": "7.0.2",
     "postcss-logical": "7.0.1",
     "rimraf": "5.0.7",
     "rollup": "4.18.0",