build(deps-dev): bump postcss in /nextjs/cms-education

Bumps [postcss](/~https://github.com/postcss/postcss) from 8.5.2 to 8.5.3.
- [Release notes](/~https://github.com/postcss/postcss/releases)
- [Changelog](/~https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.2...8.5.3)

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

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

nextjs/cms-education/yarn.lock

@@ -5440,13 +5440,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.4.19, postcss@npm:^8.4.47":
-  version: 8.5.2
-  resolution: "postcss@npm:8.5.2"
+  version: 8.5.3
+  resolution: "postcss@npm:8.5.3"
   dependencies:
     nanoid: ^3.3.8
     picocolors: ^1.1.1
     source-map-js: ^1.2.1
-  checksum: 5097c458ce792d38bb93cb245f8603804b48087540b9d0e42d612f6d0bd7add4b47848cb9bc2a5ee388f70e45a1546fa7471b84697ab95aa8206aa3989fea611
+  checksum: da574620eb84ff60e65e1d8fc6bd5ad87a19101a23d0aba113c653434161543918229a0f673d89efb3b6d4906287eb04b957310dbcf4cbebacad9d1312711461
   languageName: node
   linkType: hard