chore(deps): bump postcss from 7.0.21 to 8.4.38

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.21 to 8.4.38.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@7.0.21...8.4.38)

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

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

yarn.lock

@@ -7264,6 +7264,11 @@ path-type@^4.0.0:
  resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
  integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
+picocolors@^0.2.1:
+ version "0.2.1"
+ resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-0.2.1.tgz#570670f793646851d1ba135996962abad587859f"
+ integrity sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==
+
 picocolors@^1.0.0, picocolors@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.1.tgz#a8ad579b571952f0e5d25892de5445bcfe25aaa1"
@@ -7588,13 +7593,12 @@ [email protected]:
  supports-color "^6.1.0"
 
 postcss@^7.0.14, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6:
- version "7.0.34"
- resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.34.tgz#f2baf57c36010df7de4009940f21532c16d65c20"
- integrity sha512-H/7V2VeNScX9KE83GDrDZNiGT1m2H+UTnlinIzhjlLX9hfMUn1mHNnGeX81a1c8JSBdBvqk7c2ZOG6ZPn5itGw==
+ version "7.0.39"
+ resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.39.tgz#9624375d965630e2e1f2c02a935c82a59cb48309"
+ integrity sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==
  dependencies:
- chalk "^2.4.2"
+ picocolors "^0.2.1"
  source-map "^0.6.1"
- supports-color "^6.1.0"
 
 postcss@^8.4.38:
  version "8.4.38"