[Security] Bump mixin-deep from 1.2.0 to 1.3.1

Bumps [mixin-deep](https://github.com/jonschlinkert/mixin-deep) from 1.2.0 to 1.3.1. **This update includes security fixes.**
- [Release notes](https://github.com/jonschlinkert/mixin-deep/releases)
- [Commits](jonschlinkert/mixin-deep@1.2.0...1.3.1)

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

Author: dependabot-support

package-lock.json

@@ -3716,6 +3716,12 @@ is-extendable@^0.1.0, is-extendable@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
 
+is-extendable@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-1.0.1.tgz#a7470f9e426733d81bd81e1155264e3a3507cab4"
+  dependencies:
+    is-plain-object "^2.0.4"
+
 is-extglob@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-1.0.0.tgz#ac468177c4943405a092fc8f29760c6ffc6206c0"
@@ -3822,7 +3828,7 @@ is-plain-obj@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"
 
-is-plain-object@^2.0.1, is-plain-object@^2.0.3:
+is-plain-object@^2.0.1, is-plain-object@^2.0.3, is-plain-object@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-2.0.4.tgz#2c163b3fafb1b606d9d17928f05c2a1c38e07677"
   dependencies:
@@ -4768,11 +4774,11 @@ minimist@~0.0.1:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
 
 mixin-deep@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.2.0.tgz#d02b8c6f8b6d4b8f5982d3fd009c4919851c3fe2"
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.1.tgz#a49e7268dce1a0d9698e45326c5626df3543d0fe"
   dependencies:
     for-in "^1.0.2"
-    is-extendable "^0.1.1"
+    is-extendable "^1.0.1"
 
 mkdirp@0.5.0:
   version "0.5.0"