build(deps): bump postcss from 7.0.32 to 7.0.34 (#2148)

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.32 to 7.0.34.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/7.0.32...7.0.34)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

yarn.lock

@@ -5708,9 +5708,9 @@ postcss-value-parser@^4.0.0:
   integrity sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==
 
 postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.32"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.32.tgz#4310d6ee347053da3433db2be492883d62cec59d"
-  integrity sha512-03eXong5NLnNCD05xscnGKGDZ98CyzoqPSMjOe6SuoQY7Z2hIj0Ld1g/O/UQRuOle2aRtiIRDg9tDcTGAkLfKw==
+  version "7.0.34"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.34.tgz#f2baf57c36010df7de4009940f21532c16d65c20"
+  integrity sha512-H/7V2VeNScX9KE83GDrDZNiGT1m2H+UTnlinIzhjlLX9hfMUn1mHNnGeX81a1c8JSBdBvqk7c2ZOG6ZPn5itGw==
   dependencies:
     chalk "^2.4.2"
     source-map "^0.6.1"