dep(deps-dev): bump postcss from 8.5.3 to 8.5.6 (#78)

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

Author: dependabot[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "@types/react": "~19.1.8",
     "@types/react-dom": "~19.1.6",
     "geist": "~1.4.2",
-    "postcss": "~8.5.3",
+    "postcss": "~8.5.6",
     "serve": "~14.2.4",
     "tailwindcss": "^4.1.11",
     "typescript": "~5.8.3"