chore(deps): update dependency postcss-custom-properties to v13.3.5 (#2133)

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

Author: renovate[bot]

package.json

@@ -187,7 +187,7 @@
     "openai": "3.3.0",
     "pdf-parse": "1.1.1",
     "postcss-calc": "9.0.1",
-    "postcss-custom-properties": "13.3.4",
+    "postcss-custom-properties": "13.3.5",
     "postcss-import": "15.1.0",
     "postcss-url": "10.1.3",
     "prettier": "3.0.3",