Update dependency postcss to v8.4.31 [SECURITY] (#657)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

yarn.lock

@@ -3167,17 +3167,7 @@
     colors "~1.2.1"
     string-argv "~0.3.1"
 
-"@rushstack/[email protected]":
-  version "4.16.1"
-  resolved "https://registry.yarnpkg.com/@rushstack/ts-command-line/-/ts-command-line-4.16.1.tgz#3537bbc323f77c8646646465c579b992d39feb16"
-  integrity sha512-+OCsD553GYVLEmz12yiFjMOzuPeCiZ3f8wTiFHL30ZVXexTyPmgjwXEhg2K2P0a2lVf+8YBy7WtPoflB2Fp8/A==
-  dependencies:
-    "@types/argparse" "1.0.38"
-    argparse "~1.0.9"
-    colors "~1.2.1"
-    string-argv "~0.3.1"
-
-"@rushstack/ts-command-line@^4.15.0":
+"@rushstack/[email protected]", "@rushstack/ts-command-line@^4.15.0":
   version "4.16.1"
   resolved "https://registry.yarnpkg.com/@rushstack/ts-command-line/-/ts-command-line-4.16.1.tgz#3537bbc323f77c8646646465c579b992d39feb16"
   integrity sha512-+OCsD553GYVLEmz12yiFjMOzuPeCiZ3f8wTiFHL30ZVXexTyPmgjwXEhg2K2P0a2lVf+8YBy7WtPoflB2Fp8/A==
@@ -11068,9 +11058,9 @@ postcss@^6.0.1:
     supports-color "^5.4.0"
 
 postcss@^8.4.17, postcss@^8.4.27:
-  version "8.4.29"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.29.tgz#33bc121cf3b3688d4ddef50be869b2a54185a1dd"
-  integrity sha512-cbI+jaqIeu/VGqXEarWkRCCffhjgXc0qjBtXpqJhTBohMUjUQnbBr0xqX3vEKudc4iviTewcJo5ajcec5+wdJw==
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"