chore(deps): bump postcss from 7.0.30 to 7.0.39

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.30 to 7.0.39.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/7.0.39/CHANGELOG.md)
- [Commits](postcss/postcss@7.0.30...7.0.39)

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

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

Author: dependabot[bot]

yarn.lock

@@ -1794,7 +1794,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.0, chalk@^2.4.1, chalk@^2.4.2:
+chalk@^2.0.0, chalk@^2.4.1:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -2275,7 +2275,7 @@ de-indent@^1.0.2:
   resolved "https://registry.yarnpkg.com/de-indent/-/de-indent-1.0.2.tgz#b2038e846dc33baa5796128d0804b455b8c1e21d"
   integrity sha1-sgOOhG3DO6pXlhKNCAS0VbjB4h0=
 
-debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
+debug@2.6.9, debug@^2.1.3, debug@^2.2.0, debug@^2.3.3:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -3721,6 +3721,13 @@ json5@^2.1.2:
   dependencies:
     minimist "^1.2.5"
 
+jsonp@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/jsonp/-/jsonp-0.2.1.tgz#a65b4fa0f10bda719a05441ea7b94c55f3e15bae"
+  integrity sha1-pltPoPEL2nGaBUQep7lMVfPhW64=
+  dependencies:
+    debug "^2.1.3"
+
 keyv@3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/keyv/-/keyv-3.0.0.tgz#44923ba39e68b12a7cec7df6c3268c031f2ef373"
@@ -4594,6 +4601,11 @@ phin@^2.9.1:
   resolved "https://registry.yarnpkg.com/phin/-/phin-2.9.3.tgz#f9b6ac10a035636fb65dfc576aaaa17b8743125c"
   integrity sha512-CzFr90qM24ju5f88quFC/6qohjC144rehe5n6DH900lgXmUe86+xCKc10ev56gRKC4/BkHUoG4uSiQgBiIXwDA==
 
+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==
+
 picomatch@^2.0.4, picomatch@^2.2.1:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
@@ -4988,13 +5000,12 @@ postcss-value-parser@^4.0.2:
   integrity sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==
 
 postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.27, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.30"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.30.tgz#cc9378beffe46a02cbc4506a0477d05fcea9a8e2"
-  integrity sha512-nu/0m+NtIzoubO+xdAlwZl/u5S5vi/y6BCsoL8D+8IxsD3XvBS8X4YEADNIVXKVuQvduiucnRv+vPIqj56EGMQ==
+  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"
 
 posthtml-parser@^0.4.1:
   version "0.4.2"
@@ -5965,13 +5976,6 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-supports-color@^6.1.0:
-  version "6.1.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.1.0.tgz#0764abc69c63d5ac842dd4867e8d025e880df8f3"
-  integrity sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==
-  dependencies:
-    has-flag "^3.0.0"
-
 svgo@^1.0.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/svgo/-/svgo-1.3.2.tgz#b6dc511c063346c9e415b81e43401145b96d4167"
@@ -6366,6 +6370,18 @@ vm-browserify@^1.0.1:
   resolved "https://registry.yarnpkg.com/vm-browserify/-/vm-browserify-1.1.2.tgz#78641c488b8e6ca91a75f511e7a3b32a86e5dda0"
   integrity sha512-2ham8XPWTONajOR0ohOKOHXkm3+gaBmGut3SRuu75xLd/RRaY6vqgh8NBYYk7+RW3u5AtzPQZG8F10LHkl0lAQ==
 
+vue-client-only@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/vue-client-only/-/vue-client-only-2.1.0.tgz#1a67a47b8ecacfa86d75830173fffee3bf8a4ee3"
+  integrity sha512-vKl1skEKn8EK9f8P2ZzhRnuaRHLHrlt1sbRmazlvsx6EiC3A8oWF8YCBrMJzoN+W3OnElwIGbVjsx6/xelY1AA==
+
+vue-embed-gist@^1.1.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/vue-embed-gist/-/vue-embed-gist-1.2.0.tgz#cf308970816356cede840b71258a70e87ff72d40"
+  integrity sha512-HUdkeTIYanXunY9dWwAtChJTcp3yubStvQ7gAaTbF/qaOeivS4Yt8sD3gkyGh3d1ncGdiOpdh5tS5MXBD2doJw==
+  dependencies:
+    jsonp "^0.2.1"
+
 vue-hot-reload-api@^2.3.0:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/vue-hot-reload-api/-/vue-hot-reload-api-2.3.4.tgz#532955cc1eb208a3d990b3a9f9a70574657e08f2"