build(deps-dev): bump postcss from 8.4.21 to 8.4.23 in /web

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 to 8.4.23.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.21...8.4.23)

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

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

web/package-lock.json

@@ -48,7 +48,7 @@
         "netlify-plugin-cypress": "^2.2.1",
         "next-mdx-remote": "^4.4.1",
         "next-remote-watch": "2.0.0",
-        "postcss": "^8.4.21",
+        "postcss": "^8.4.23",
         "rehype-stringify": "^9.0.3",
         "remark-gfm": "^3.0.1",
         "start-server-and-test": "^2.0.0",
@@ -12824,9 +12824,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.21",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.21.tgz",
-      "integrity": "sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==",
+      "version": "8.4.23",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.23.tgz",
+      "integrity": "sha512-bQ3qMcpF6A/YjR55xtoTr0jGOlnPOKAIMdOWiv0EIT6HVPEaJiJB4NLljSbiHoC2RX7DN5Uvjtpbg1NPdwv1oA==",
       "funding": [
         {
           "type": "opencollective",
@@ -12835,10 +12835,14 @@
         {
           "type": "tidelift",
           "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
         }
       ],
       "dependencies": {
-        "nanoid": "^3.3.4",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
         "source-map-js": "^1.0.2"
       },

web/package.json

@@ -62,7 +62,7 @@
     "netlify-plugin-cypress": "^2.2.1",
     "next-mdx-remote": "^4.4.1",
     "next-remote-watch": "2.0.0",
-    "postcss": "^8.4.21",
+    "postcss": "^8.4.23",
     "rehype-stringify": "^9.0.3",
     "remark-gfm": "^3.0.1",
     "start-server-and-test": "^2.0.0",