Bump postcss from 8.4.29 to 8.4.31 in /ServiceDocumentSamples

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.29 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@8.4.29...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: indirect
...

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

ServiceDocumentSamples/yarn.lock

@@ -3626,9 +3626,9 @@ postcss-value-parser@~4.2.0:
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
 postcss@~8.4.20:
-  version "8.4.29"
-  resolved "https://nexus-proxy.repo.local.sfdc.net/nexus/content/groups/npm-all/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"
@@ -3639,9 +3639,9 @@ prelude-ls@^1.2.1:
   resolved "https://nexus-proxy.repo.local.sfdc.net/nexus/content/groups/npm-all/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
   integrity sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==
 
-prettier-plugin-apex@^1.10.0:
+prettier-plugin-apex@^1.8.0:
   version "1.13.0"
-  resolved "https://nexus-proxy.repo.local.sfdc.net/nexus/content/groups/npm-all/prettier-plugin-apex/-/prettier-plugin-apex-1.13.0.tgz#c71a47637803e282c988a534e5e1f4dd93df649c"
+  resolved "https://registry.yarnpkg.com/prettier-plugin-apex/-/prettier-plugin-apex-1.13.0.tgz#c71a47637803e282c988a534e5e1f4dd93df649c"
   integrity sha512-QeGHrNOR6EXoH0Mto385FDrRC+XSCc/8zvtqNvhEaFovEMC7InDp2Mn5WxjJzQUdgtUYoXL+NYcSm3nxMqsymQ==
   dependencies:
     axios "^1.0.0"