Bump postcss from 8.3.7 to 8.4.31 in /themes/default/theme

Bumps [postcss](https://github.com/postcss/postcss) from 8.3.7 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.3.7...8.4.31)

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

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

themes/default/theme/package.json

@@ -23,7 +23,7 @@
         "css-loader": "^6.2.0",
         "cssnano": "^5.0.8",
         "mini-css-extract-plugin": "^2.2.1",
-        "postcss": "^8.3.6",
+        "postcss": "^8.4.31",
         "postcss-loader": "^6.1.1",
         "prettier": "2.5.1",
         "sass": "^1.38.2",

themes/default/theme/yarn.lock

@@ -1583,10 +1583,10 @@ nanocolors@^0.1.5:
   resolved "https://registry.yarnpkg.com/nanocolors/-/nanocolors-0.1.6.tgz#bc2350d3edfdbfadd7ac018c855ae7c13905a6ad"
   integrity sha512-2pvTw6vYRaBLGir2xR7MxaJtyWkrn+C53EpW8yPotG+pdAwBvt0Xwk4VJ6VHLY0aLthVZPvDfm9TdZvrvAm5UQ==
 
-nanoid@^3.1.25:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.2.0.tgz#62667522da6673971cca916a6d3eff3f415ff80c"
-  integrity sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==
+nanoid@^3.3.6:
+  version "3.3.6"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.6.tgz#443380c856d6e9f9824267d960b4236ad583ea4c"
+  integrity sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==
 
 neo-async@^2.6.2:
   version "2.6.2"
@@ -1731,6 +1731,11 @@ path-type@^4.0.0:
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
+picocolors@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
+  integrity sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==
+
 picomatch@^2.0.4, picomatch@^2.2.1, picomatch@^2.2.3:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.0.tgz#f1f061de8f6a4bf022892e2d128234fb98302972"
@@ -2030,14 +2035,14 @@ postcss-value-parser@^4.0.2, postcss-value-parser@^4.1.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.1.0.tgz#443f6a20ced6481a2bda4fa8532a6e55d789a2cb"
   integrity sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==
 
-postcss@^8.1.6, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.3.6:
-  version "8.3.7"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.7.tgz#ec88563588c8da8e58e7226f7633b51ae221eeda"
-  integrity sha512-9SaY7nnyQ63/WittqZYAvkkYPyKxchMKH71UDzeTmWuLSvxTRpeEeABZAzlCi55cuGcoFyoV/amX2BdsafQidQ==
+postcss@^8.1.6, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.4.31:
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
   dependencies:
-    nanocolors "^0.1.5"
-    nanoid "^3.1.25"
-    source-map-js "^0.6.2"
+    nanoid "^3.3.6"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
 
 preact@^10.13.2:
   version "10.13.2"
@@ -2263,10 +2268,10 @@ simple-swizzle@^0.2.2:
   dependencies:
     is-arrayish "^0.3.1"
 
-source-map-js@^0.6.2:
-  version "0.6.2"
-  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-0.6.2.tgz#0bb5de631b41cfbda6cfba8bd05a80efdfd2385e"
-  integrity sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug==
+source-map-js@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
 
 source-map-support@~0.5.20:
   version "0.5.21"