Bump postcss from 8.4.30 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.30 to 8.4.31.
- [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/8.4.30...8.4.31)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package-lock.json

@@ -28,7 +28,7 @@
         "nodemon": "^3.0.1",
         "npm-run-all": "^4.1.5",
         "popper.js": "^1.16.1",
-        "postcss": "^8.4.30",
+        "postcss": "^8.4.31",
         "postcss-cli": "^10.1.0",
         "postcss-understrap-palette-generator": "git+https://github.com/understrap/postcss-understrap-palette-generator.git",
         "rollup": "^3.29.3",
@@ -4916,9 +4916,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.30",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.30.tgz",
-      "integrity": "sha512-7ZEao1g4kd68l97aWG/etQKPKq07us0ieSZ2TnFDk11i0ZfDW2AwKHYU8qv4MZKqN2fdBfg+7q0ES06UA73C1g==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
       "funding": [
         {

package.json

@@ -73,7 +73,7 @@
     "nodemon": "^3.0.1",
     "npm-run-all": "^4.1.5",
     "popper.js": "^1.16.1",
-    "postcss": "^8.4.30",
+    "postcss": "^8.4.31",
     "postcss-cli": "^10.1.0",
     "postcss-understrap-palette-generator": "git+https://github.com/understrap/postcss-understrap-palette-generator.git",
     "rollup": "^3.29.3",