Bump mixin-deep from 1.3.2 to 2.0.1

Bumps [mixin-deep](https://github.com/jonschlinkert/mixin-deep) from 1.3.2 to 2.0.1.
- [Release notes](https://github.com/jonschlinkert/mixin-deep/releases)
- [Commits](https://github.com/jonschlinkert/mixin-deep/compare/1.3.2...2.0.1)

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

package.json

@@ -36,7 +36,7 @@
     "lodash": "^4.17.13",
     "lodash.template": "^4.5.0",
     "micromatch": "^4.0.2",
-    "mixin-deep": "^1.3.2",
+    "mixin-deep": "^2.0.1",
     "node-sass": "^4.12.0",
     "regenerator-runtime": "^0.13.5",
     "set-value": "^2.0.1"

yarn.lock

@@ -4758,7 +4758,7 @@ mitt@^1.1.3:
   resolved "https://registry.yarnpkg.com/mitt/-/mitt-1.2.0.tgz#cb24e6569c806e31bd4e3995787fe38a04fdf90d"
   integrity sha512-r6lj77KlwqLhIUku9UWYes7KJtsczvolZkzp8hbaDPPaE24OmWl5s539Mytlj22siEQKosZ26qCBgda2PKwoJw==
 
-mixin-deep@^1.2.0, mixin-deep@^1.3.2:
+mixin-deep@^1.2.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.2.tgz#1120b43dc359a785dce65b55b82e257ccf479566"
   integrity sha512-WRoDn//mXBiJ1H40rqa3vH0toePwSsGb45iInWlTySa+Uu4k3tYUSxa2v1KqAiLtvlrSzaExqS1gtk96A9zvEA==
@@ -4766,6 +4766,11 @@ mixin-deep@^1.2.0, mixin-deep@^1.3.2:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
+mixin-deep@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-2.0.1.tgz#9a6946bef4a368401b784970ae3caaaa6bab02fa"
+  integrity sha512-imbHQNRglyaplMmjBLL3V5R6Bfq5oM+ivds3SKgc6oRtzErEnBUUc5No11Z2pilkUvl42gJvi285xTNswcKCMA==
+
 "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.1:
   version "0.5.5"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.5.tgz#d91cefd62d1436ca0f41620e251288d420099def"