Bump postcss from 8.5.15 to 8.5.23

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.15 to 8.5.23.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.15...8.5.23)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.23
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package.json

@@ -49,7 +49,7 @@
     "lefthook": "^2.1.10",
     "markdownlint": "^0.40.0",
     "markdownlint-cli2": "^0.19.1",
-    "postcss": "^8.5.15",
+    "postcss": "^8.5.23",
     "postcss-nesting": "^13.0.2",
     "prettier": "^3.7.4",
     "recast": "^0.23.11",

yarn.lock

@@ -10479,12 +10479,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.12":
-  version: 3.3.15
-  resolution: "nanoid@npm:3.3.15"
+"nanoid@npm:^3.3.16":
+  version: 3.3.18
+  resolution: "nanoid@npm:3.3.18"
   bin:
     nanoid: bin/nanoid.cjs
-  checksum: e0b12e3a1d361f74150fa4b25631d0ae29f7162dab01a12f0f1be1f53b7a2a219f9b729504e474d4821207d0fe349bd3c97569ab5cf7ec2fff6aa94711956c93
+  checksum: b994b4e396730f8be2520923284e2040d61eaee55cc6d4935ef6d38d34bafdc46133eda4d3faea5073bda545aa6079d82b886caeac5c731cf9ac18bcc1301425
   languageName: node
   linkType: hard
 
@@ -11890,14 +11890,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.15":
-  version: 8.5.15
-  resolution: "postcss@npm:8.5.15"
+"postcss@npm:^8.5.23":
+  version: 8.5.23
+  resolution: "postcss@npm:8.5.23"
   dependencies:
-    nanoid: "npm:^3.3.12"
+    nanoid: "npm:^3.3.16"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 7f2e63ae22fbe43aace1bf652bd99da4e90737c64194d49e51ddc9cd0f9e51ff2861a7d734379b494deffa03a880a5c65eec70bc29ee9ebaa7136dde3eee8f31
+  checksum: ed714e635b330bb42666ecdd0c0b4f30224ded15b0b0052d6bc2b92832f2cf17d1c1141359453f96f0a84f8fbf4c405a74df187f559163b8f31131b2535455aa
   languageName: node
   linkType: hard
 
@@ -12248,7 +12248,7 @@ __metadata:
     markdownlint-cli2: "npm:^0.19.1"
     mkdirp: "npm:^3.0.1"
     netlify-plugin-cache: "npm:^1.0.3"
-    postcss: "npm:^8.5.15"
+    postcss: "npm:^8.5.23"
     postcss-nesting: "npm:^13.0.2"
     prettier: "npm:^3.7.4"
     prism-react-renderer: "npm:^2.4.1"