Bump ember-cli-postcss from 5.0.0 to 6.0.1 (#505)

Bumps [ember-cli-postcss](https://github.com/jeffjewiss/ember-cli-postcss) from 5.0.0 to 6.0.1.
- [Release notes](https://github.com/jeffjewiss/ember-cli-postcss/releases)
- [Changelog](https://github.com/jeffjewiss/ember-cli-postcss/blob/master/CHANGELOG.md)
- [Commits](jeffjewiss/ember-cli-postcss@v5.0.0...v6.0.1)

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

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

Author: dependabot-preview[bot]

package.json

@@ -51,7 +51,7 @@
     "ember-cli-babel": "^7.21.0",
     "ember-cli-clipboard": "^0.15.0",
     "ember-cli-htmlbars": "^5.2.0",
-    "ember-cli-postcss": "^5.0.0",
+    "ember-cli-postcss": "^6.0.1",
     "ember-cli-sass": "10.0.1",
     "ember-cli-string-helpers": "^5.0.0",
     "ember-cli-string-utils": "^1.1.0",

yarn.lock

@@ -3702,15 +3702,15 @@ broccoli-merge-trees@^2.0.0:
     broccoli-plugin "^1.3.0"
     merge-trees "^1.0.1"
 
-broccoli-merge-trees@^3.0.0, broccoli-merge-trees@^3.0.1, broccoli-merge-trees@^3.0.2:
+broccoli-merge-trees@^3.0.1, broccoli-merge-trees@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/broccoli-merge-trees/-/broccoli-merge-trees-3.0.2.tgz#f33b451994225522b5c9bcf27d59decfd8ba537d"
   integrity sha512-ZyPAwrOdlCddduFbsMyyFzJUrvW6b04pMvDiAQZrCwghlvgowJDY+EfoXn+eR1RRA5nmGHJ+B68T63VnpRiT1A==
   dependencies:
     broccoli-plugin "^1.3.0"
     merge-trees "^2.0.0"
 
-broccoli-merge-trees@^4.2.0:
+broccoli-merge-trees@^4.0.0, broccoli-merge-trees@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/broccoli-merge-trees/-/broccoli-merge-trees-4.2.0.tgz#692d3c163ecea08c5714a9434d664e628919f47c"
   integrity sha512-nTrQe5AQtCrW4enLRvbD/vTLHqyW2tz+vsLXQe4IEaUhepuMGVKJJr+I8n34Vu6fPjmPLwTjzNC8izMIDMtHPw==
@@ -3871,18 +3871,19 @@ broccoli-plugin@^3.1.0:
     rimraf "^2.3.4"
     symlink-or-copy "^1.1.8"
 
-broccoli-postcss-single@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/broccoli-postcss-single/-/broccoli-postcss-single-3.0.0.tgz#1393f87b69e4bbf20a1a1e614e09bbf066db28a2"
-  integrity sha512-+CsV6zdK9CXTplZvQeAsZm7mEh+BwIN6GBzpqm7agqsMZTvW6kkcWDaL2ahG1+Aq2HfLYk1Sam6iQ3jdESNmPA==
+broccoli-postcss-single@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/broccoli-postcss-single/-/broccoli-postcss-single-4.0.1.tgz#21f1494826058c974fd746bba7d10976d9cce26d"
+  integrity sha512-WfIKXqkTNyA0OJuJKoUJ2TxerRvtkiwYEK8KY5gHGr/GGqPHYWVnAUN5/O8/LWBNhgr9M94KstpXe+GqXyEflA==
   dependencies:
     broccoli-caching-writer "^3.0.3"
     include-path-searcher "^0.1.0"
-    mkdirp "^0.5.1"
+    minimist ">=1.2.5"
+    mkdirp "^1.0.3"
     object-assign "^4.1.1"
     postcss "^7.0.0"
 
-broccoli-postcss@^5.0.0:
+broccoli-postcss@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/broccoli-postcss/-/broccoli-postcss-5.1.0.tgz#5b660fa72ba921b01574b4ab10449b20890bba0a"
   integrity sha512-f5cHP5g7EFidu9w88WOLTtbk4dd/W7amK0nek08FkmUII2h4W/Je4EV26HtMEm9nb1hKI301wwuEQ5AQRsVYog==
@@ -6244,15 +6245,15 @@ ember-cli-path-utils@^1.0.0:
   resolved "https://registry.yarnpkg.com/ember-cli-path-utils/-/ember-cli-path-utils-1.0.0.tgz#4e39af8b55301cddc5017739b77a804fba2071ed"
   integrity sha1-Tjmvi1UwHN3FAXc5t3qAT7ogce0=
 
-ember-cli-postcss@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/ember-cli-postcss/-/ember-cli-postcss-5.0.0.tgz#07891b2950e0a6e8b35234d5960575d0471da50a"
-  integrity sha512-znJOyXeYmhDF3DOocfcCUrnGN0iWmDGvMJKTVPszFeBd1/cqx+lSxc1Tx25RAF1KpOyI0FqD1amp6s9lud62EQ==
+ember-cli-postcss@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/ember-cli-postcss/-/ember-cli-postcss-6.0.1.tgz#f4c841192c2dddf7700a085a72cfb17a9ba3fea6"
+  integrity sha512-xnqcFE9/OdfnxqisLHys7VZLzzSSGg96fzTCL+E/q2RqvFmtUC9FRP1sXtt7/UCogB1m4cdqYeW/a0VD8zBgPg==
   dependencies:
     broccoli-file-creator "^2.1.1"
-    broccoli-merge-trees "^3.0.0"
-    broccoli-postcss "^5.0.0"
-    broccoli-postcss-single "^3.0.0"
+    broccoli-merge-trees "^4.0.0"
+    broccoli-postcss "^5.1.0"
+    broccoli-postcss-single "^4.0.0"
     ember-cli-babel "^7.1.0"
     merge "^1.2.0"