Bump postcss from 8.3.8 to 8.3.9 in /docs (#1674)

Bumps [postcss](https://github.com/postcss/postcss) from 8.3.8 to 8.3.9.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.3.8...8.3.9)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/package.json

@@ -26,7 +26,7 @@
     "gatsby-plugin-sass": "3.2.0",
     "gatsby-plugin-svgr": "2.1.0",
     "path": "0.12.7",
-    "postcss": "8.3.8",
+    "postcss": "8.3.9",
     "postcss-import": "14.0.2",
     "postcss-load-config": "3.1.0",
     "postcss-loader": "4.2.0",

docs/yarn.lock

@@ -10998,20 +10998,15 @@ nan@^2.12.1:
   resolved "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz"
   integrity sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ==
 
-nanocolors@^0.2.2:
-  version "0.2.12"
-  resolved "https://registry.yarnpkg.com/nanocolors/-/nanocolors-0.2.12.tgz#4d05932e70116078673ea4cc6699a1c56cc77777"
-  integrity sha512-SFNdALvzW+rVlzqexid6epYdt8H9Zol7xDoQarioEFcFN0JHo4CYNztAxmtfgGTVRCmFlEOqqhBpoFGKqSAMug==
-
 [email protected]:
   version "2.1.4"
   resolved "https://registry.npmjs.org/nanoid/-/nanoid-2.1.4.tgz"
   integrity sha512-PijW88Ry+swMFfArOrm7uRAdVmJilLbej7WwVY6L5QwLDckqxSOinGGMV596yp5C8+MH3VvCXCSZ6AodGtKrYQ==
 
-nanoid@^3.1.25:
-  version "3.1.28"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.28.tgz#3c01bac14cb6c5680569014cc65a2f26424c6bd4"
-  integrity sha512-gSu9VZ2HtmoKYe/lmyPFES5nknFrHa+/DT9muUFWFMi6Jh9E1I7bkvlQ8xxf1Kos9pi9o8lBnIOkatMhKX/YUw==
+nanoid@^3.1.28:
+  version "3.1.29"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.29.tgz#214fb2d7a33e1a5bef4757b779dfaeb6a4e5aeb4"
+  integrity sha512-dW2pUSGZ8ZnCFIlBIA31SV8huOGCHb6OwzVCc7A69rb/a+SgPBwfmLvK5TKQ3INPbRkcI8a/Owo0XbiTNH19wg==
 
 nanomatch@^1.2.9:
   version "1.2.13"
@@ -12487,13 +12482,13 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.0.2, postcss-value-parser@^
   resolved "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.1.0.tgz"
   integrity sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==
 
-[email protected].8:
-  version "8.3.8"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.8.tgz#9ebe2a127396b4b4570ae9f7770e7fb83db2bac1"
-  integrity sha512-GT5bTjjZnwDifajzczOC+r3FI3Cu+PgPvrsjhQdRqa2kTJ4968/X9CUce9xttIB0xOs5c6xf0TCWZo/y9lF6bA==
+[email protected].9:
+  version "8.3.9"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.9.tgz#98754caa06c4ee9eb59cc48bd073bb6bd3437c31"
+  integrity sha512-f/ZFyAKh9Dnqytx5X62jgjhhzttjZS7hMsohcI7HEI5tjELX/HxCy3EFhsRxyzGvrzFF+82XPvCS8T9TFleVJw==
   dependencies:
-    nanocolors "^0.2.2"
-    nanoid "^3.1.25"
+    nanoid "^3.1.28"
+    picocolors "^0.2.1"
     source-map-js "^0.6.2"
 
 postcss@^6.0.1, postcss@^6.0.23: