Update dependency postcss to v8.5.0 (#1295)

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

package.json

@@ -65,7 +65,7 @@
     "micromark-extension-math": "3.1.0",
     "micromark-extension-mdxjs": "3.0.0",
     "pagefind": "1.3.0",
-    "postcss": "8.4.49",
+    "postcss": "8.5.0",
     "prettier": "3.4.2",
     "rehype-katex": "7.0.1",
     "rehype-pretty-code": "0.14.0",

yarn.lock

@@ -4954,6 +4954,11 @@ nanoid@^3.3.6, nanoid@^3.3.7:
   resolved "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz"
   integrity sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==
 
+nanoid@^3.3.8:
+  version "3.3.8"
+  resolved "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz"
+  integrity sha512-WNLf5Sd8oZxOm+TzppcYk8gVOgP+l58xNy58D0nbUnOxOWRWvlcCV4kUF7ltmI6PsrLl/BgKEyS4mqsGChFN0w==
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz"
@@ -5371,7 +5376,16 @@ postcss@8.4.31:
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
-postcss@8.4.49, postcss@^8.4.31, postcss@^8.4.47, postcss@^8.4.48:
+postcss@8.5.0:
+  version "8.5.0"
+  resolved "https://registry.npmjs.org/postcss/-/postcss-8.5.0.tgz"
+  integrity sha512-27VKOqrYfPncKA2NrFOVhP5MGAfHKLYn/Q0mz9cNQyRAKYi3VNHwYU2qKKqPCqgBmeeJ0uAFB56NumXZ5ZReXg==
+  dependencies:
+    nanoid "^3.3.8"
+    picocolors "^1.1.1"
+    source-map-js "^1.2.1"
+
+postcss@^8.4.31, postcss@^8.4.47, postcss@^8.4.48:
   version "8.4.49"
   resolved "https://registry.npmjs.org/postcss/-/postcss-8.4.49.tgz"
   integrity sha512-OCVPnIObs4N29kxTjzLfUryOkvZEq+pf8jTF0lg8E7uETuWHA+v7j3c/xJmiqpX450191LlmZfUKkXxkTry7nA==