fix(deps): update dependency postcss to ^8.4.21

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "commander": "^8.1.0",
     "css-modules-loader-core": "^1.1.0",
     "lodash": "^4.17.21",
-    "postcss": "^8.3.6",
+    "postcss": "^8.4.21",
     "postcss-nested": "^5.0.6",
     "postcss-scss": "^4.0.0",
     "postcss-selector-parser": "^6.0.6",

yarn.lock

@@ -5926,10 +5926,10 @@ mute-stream@~0.0.4:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
   integrity sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==
 
-nanoid@^3.3.3:
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.3.tgz#fd8e8b7aa761fe807dba2d1b98fb7241bb724a25"
-  integrity sha512-p1sjXuopFs0xg+fPASzQ28agW1oHD7xDsd9Xkf3T15H3c/cifrFHVwrh74PdoklAPi+i7MdRsE47vm2r6JoB+w==
+nanoid@^3.3.4:
+  version "3.3.4"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.4.tgz#730b67e3cd09e2deacf03c027c81c9d9dbc5e8ab"
+  integrity sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==
 
 natural-compare@^1.4.0:
   version "1.4.0"
@@ -6686,12 +6686,12 @@ postcss@7.x.x:
     picocolors "^0.2.1"
     source-map "^0.6.1"
 
-postcss@^8.3.6, postcss@^8.4.12:
-  version "8.4.13"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.13.tgz#7c87bc268e79f7f86524235821dfdf9f73e5d575"
-  integrity sha512-jtL6eTBrza5MPzy8oJLFuUscHDXTV5KcLlqAWHl5q5WYRfnNRGSmOZmOZ1T6Gy7A99mOZfqungmZMpMmCVJ8ZA==
+postcss@^8.4.12, postcss@^8.4.21:
+  version "8.4.21"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.21.tgz#c639b719a57efc3187b13a1d765675485f4134f4"
+  integrity sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==
   dependencies:
-    nanoid "^3.3.3"
+    nanoid "^3.3.4"
     picocolors "^1.0.0"
     source-map-js "^1.0.2"