Bump postcss from 8.4.27 to 8.4.28

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.27 to 8.4.28.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.27...8.4.28)

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

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

package-lock.json

@@ -28,7 +28,7 @@
         "nodemon": "^3.0.1",
         "npm-run-all": "^4.1.5",
         "popper.js": "^1.16.1",
-        "postcss": "^8.4.27",
+        "postcss": "^8.4.28",
         "postcss-cli": "^10.1.0",
         "postcss-understrap-palette-generator": "git+https://github.com/understrap/postcss-understrap-palette-generator.git",
         "rollup": "^3.28.0",
@@ -4916,9 +4916,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.27",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.27.tgz",
-      "integrity": "sha512-gY/ACJtJPSmUFPDCHtX78+01fHa64FaU4zaaWfuh1MhGJISufJAH4cun6k/8fwsHYeK4UQmENQK+tRLCFJE8JQ==",
+      "version": "8.4.28",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.28.tgz",
+      "integrity": "sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==",
       "dev": true,
       "funding": [
         {

package.json

@@ -73,7 +73,7 @@
     "nodemon": "^3.0.1",
     "npm-run-all": "^4.1.5",
     "popper.js": "^1.16.1",
-    "postcss": "^8.4.27",
+    "postcss": "^8.4.28",
     "postcss-cli": "^10.1.0",
     "postcss-understrap-palette-generator": "git+https://github.com/understrap/postcss-understrap-palette-generator.git",
     "rollup": "^3.28.0",