chore(deps): update dependency postcss to v8.4.29 (#2727)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

spring-boot-admin-server-ui/package-lock.json

@@ -91,7 +91,7 @@
     "jsdom": "^22.0.0",
     "msw": "1.2.5",
     "msw-storybook-addon": "1.8.0",
-    "postcss": "8.4.28",
+    "postcss": "8.4.29",
     "prettier": "^3.0.0",
     "rollup-plugin-visualizer": "5.9.2",
     "sass": "^1.57.1",