Bump postcss from 8.4.21 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 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@8.4.21...8.4.31)

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

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -10227,12 +10227,7 @@ mute-stream@~1.0.0:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-1.0.0.tgz#e31bd9fe62f0aed23520aa4324ea6671531e013e"
   integrity sha512-avsJQhyd+680gKXyG/sQc0nXaC6rBkPOfyHYcFb9+hdkqQkR9bdnkJ0AMZhke0oesPqIO+mFFJ+IdBc7mst4IA==
 
-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==
-
-nanoid@^3.3.6:
+nanoid@^3.3.4, 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==
@@ -11728,34 +11723,7 @@ postcss-zindex@^5.1.0:
   resolved "https://registry.yarnpkg.com/postcss-zindex/-/postcss-zindex-5.1.0.tgz#4a5c7e5ff1050bd4c01d95b1847dfdcc58a496ff"
   integrity sha512-fgFMf0OtVSBR1va1JNHYgMxYk73yhn/qb4uQDq1DLGYolz8gHCyr/sesEuGUaYs58E3ZJRcpoGuPVoB7Meiq9A==
 
-postcss@^8.0.9, postcss@^8.3.11, postcss@^8.4.12, postcss@^8.4.14, postcss@^8.4.17, postcss@^8.4.19:
-  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 "^3.3.4"
-    picocolors "^1.0.0"
-    source-map-js "^1.0.2"
-
-postcss@^8.4.21:
-  version "8.4.27"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.27.tgz#234d7e4b72e34ba5a92c29636734349e0d9c3057"
-  integrity sha512-gY/ACJtJPSmUFPDCHtX78+01fHa64FaU4zaaWfuh1MhGJISufJAH4cun6k/8fwsHYeK4UQmENQK+tRLCFJE8JQ==
-  dependencies:
-    nanoid "^3.3.6"
-    picocolors "^1.0.0"
-    source-map-js "^1.0.2"
-
-postcss@^8.4.24:
-  version "8.4.25"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.25.tgz#4a133f5e379eda7f61e906c3b1aaa9b81292726f"
-  integrity sha512-7taJ/8t2av0Z+sQEvNzCkpDynl0tX3uJMCODi6nT3PfASC7dYCWV9aQ+uiCf+KBD4SEFcu+GvJdGdwzQ6OSjCw==
-  dependencies:
-    nanoid "^3.3.6"
-    picocolors "^1.0.0"
-    source-map-js "^1.0.2"
-
-postcss@^8.4.27:
+postcss@^8.0.9, postcss@^8.3.11, postcss@^8.4.12, postcss@^8.4.14, postcss@^8.4.17, postcss@^8.4.19, postcss@^8.4.21, postcss@^8.4.24, postcss@^8.4.27:
   version "8.4.28"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.28.tgz#c6cc681ed00109072816e1557f889ef51cf950a5"
   integrity sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==