Build(deps-dev): bump postcss from 8.5.26 to 8.5.28

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.26 to 8.5.28.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.26...8.5.28)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.28
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "jasmine-browser-runner": "^5.0.0",
     "jasmine-core": "^7.0.2",
-    "postcss": "^8.5.26",
+    "postcss": "^8.5.28",
     "standardx": "^7.0.0",
     "stylelint": "^17.14.1",
     "stylelint-config-gds": "^3.0.0"

yarn.lock

@@ -2021,7 +2021,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.17":
+"nanoid@npm:^3.3.18":
   version: 3.3.18
   resolution: "nanoid@npm:3.3.18"
   bin:
@@ -2432,14 +2432,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.26":
-  version: 8.5.26
-  resolution: "postcss@npm:8.5.26"
+"postcss@npm:^8.5.28":
+  version: 8.5.28
+  resolution: "postcss@npm:8.5.28"
   dependencies:
-    nanoid: "npm:^3.3.17"
+    nanoid: "npm:^3.3.18"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 2bdafc00d96bd57b6649a52e458864a4bf58ee56cfdbe4aea1472b5cccc127e6c1ad653bd0bec50d211e650eb0b9270c80e1e72aff2e2fa40d9e7363234d6e43
+  checksum: 9fe44215a6628d89c8a75184b92f5b2f77e16f9e5b13b39b9009bb7e8e6eccddf82c8854bae922db1f17ace6ef3445073fe38abff513caeb03e5285b1b55620a
   languageName: node
   linkType: hard
 
@@ -3201,7 +3201,7 @@ __metadata:
     jasmine-browser-runner: "npm:^5.0.0"
     jasmine-core: "npm:^7.0.2"
     paste-html-to-govspeak: "npm:^0.5.0"
-    postcss: "npm:^8.5.26"
+    postcss: "npm:^8.5.28"
     standardx: "npm:^7.0.0"
     stylelint: "npm:^17.14.1"
     stylelint-config-gds: "npm:^3.0.0"