Merge pull request #841 from ipython/dependabot/npm_and_yarn/postcss-8.4.31

Bump postcss from 8.4.29 to 8.4.31

Author: minrk

yarn.lock

@@ -4739,13 +4739,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.3.11, postcss@npm:^8.4.21":
-  version: 8.4.29
-  resolution: "postcss@npm:8.4.29"
+  version: 8.4.31
+  resolution: "postcss@npm:8.4.31"
   dependencies:
     nanoid: ^3.3.6
     picocolors: ^1.0.0
     source-map-js: ^1.0.2
-  checksum: dd6daa25e781db9ae5b651d9b7bfde0ec6e60e86a37da69a18eb4773d5ddd51e28fc4ff054fbdc04636a31462e6bf09a1e50986f69ac52b10d46b7457cd36d12
+  checksum: 1d8611341b073143ad90486fcdfeab49edd243377b1f51834dc4f6d028e82ce5190e4f11bb2633276864503654fb7cab28e67abdc0fbf9d1f88cad4a0ff0beea
   languageName: node
   linkType: hard