Update dependency postcss to v8.4.3

Author: renovate-bot

package.json

@@ -130,7 +130,7 @@
     "webpack": "5.64.2"
   },
   "resolutions": {
-    "ember-css-modules/postcss": "8.4.1",
+    "ember-css-modules/postcss": "8.4.3",
     "ember-inflector": "4.0.2",
     "ember-modifier": "3.0.0"
   },

yarn.lock

@@ -12053,10 +12053,10 @@ postcss-values-parser@^2.0.0, postcss-values-parser@^2.0.1:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-[email protected].1, postcss@^8.0.0, postcss@^8.1.4, postcss@^8.2.15:
-  version "8.4.1"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.1.tgz#73051f825509ad1a716ef500108001bf3d1fa8f7"
-  integrity sha512-WqLs/TTzXdG+/A4ZOOK9WDZiikrRaiA+eoEb/jz2DT9KUhMNHgP7yKPO8vwi62ZCsb703Gwb7BMZwDzI54Y2Ag==
+[email protected].3, postcss@^8.0.0, postcss@^8.1.4, postcss@^8.2.15:
+  version "8.4.3"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.3.tgz#adc55db82e868dea54e9e0e7ecdb0368b5adf65a"
+  integrity sha512-d5gVKo8ekrircqHOQNvSQk8dhGOuAfu1iP6dzfAlnAmcu7EBJ9cFuZG8B1KZK362aaEO3L1H+WM3ny9xQ29tFw==
   dependencies:
     nanoid "^3.1.30"
     picocolors "^1.0.0"