Bump postcss from 8.4.24 to 8.4.31 in /website-v2 (#119)

diff --git a/website-v2/package-lock.json b/website-v2/package-lock.json
index af56fad..69e0017 100644
--- a/website-v2/package-lock.json
+++ b/website-v2/package-lock.json
@@ -8761,9 +8761,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.24",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.24.tgz",
-      "integrity": "sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "funding": [
         {
           "type": "opencollective",