Bump postcss from 8.4.39 to 8.4.40

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.39 to 8.4.40.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.39...8.4.40)

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

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

package.json

@@ -14,7 +14,7 @@
     "concurrently": "^8.2.2",
     "eleventy-plugin-reading-time": "^0.0.1",
     "markdown-it-prism": "^2.3.0",
-    "postcss": "^8.4.39",
+    "postcss": "^8.4.40",
     "tailwindcss": "^3.4.6"
   },
   "packageManager": "yarn@4.0.2"

yarn.lock

@@ -991,7 +991,7 @@ __metadata:
     concurrently: "npm:^8.2.2"
     eleventy-plugin-reading-time: "npm:^0.0.1"
     markdown-it-prism: "npm:^2.3.0"
-    postcss: "npm:^8.4.39"
+    postcss: "npm:^8.4.40"
     tailwindcss: "npm:^3.4.6"
   languageName: unknown
   linkType: soft
@@ -2397,14 +2397,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.4.39":
-  version: 8.4.39
-  resolution: "postcss@npm:8.4.39"
+"postcss@npm:^8.4.40":
+  version: 8.4.40
+  resolution: "postcss@npm:8.4.40"
   dependencies:
     nanoid: "npm:^3.3.7"
     picocolors: "npm:^1.0.1"
     source-map-js: "npm:^1.2.0"
-  checksum: 16f5ac3c4e32ee76d1582b3c0dcf1a1fdb91334a45ad755eeb881ccc50318fb8d64047de4f1601ac96e30061df203f0f2e2edbdc0bfc49b9c57bc9fb9bedaea3
+  checksum: 65ed67573e5443beaeb582282ff27a6be7c7fe3b4d9fa15761157616f2b97510cb1c335023c26220b005909f007337026d6e3ff092f25010b484ad484e80ea7f
   languageName: node
   linkType: hard