Update dependency mocha to ^6.2.0

Author: renovate-bot

package.json

@@ -31,7 +31,7 @@
   ],
   "devDependencies": {
     "markdown-toc": "^1.2.0",
-    "mocha": "^6.1.4"
+    "mocha": "^6.2.0"
   },
   "dependencies": {
     "@textlint-rule/textlint-rule-no-invalid-control-character": "^1.2.0",

yarn.lock

@@ -908,10 +908,10 @@ mkdirp@0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mocha@^6.1.4:
-  version "6.1.4"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.1.4.tgz#e35fada242d5434a7e163d555c705f6875951640"
-  integrity sha512-PN8CIy4RXsIoxoFJzS4QNnCH4psUCPWc4/rPrst/ecSJJbLBkubMiyGCP2Kj/9YnWbotFqAoeXyXMucj7gwCFg==
+mocha@^6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.2.0.tgz#f896b642843445d1bb8bca60eabd9206b8916e56"
+  integrity sha512-qwfFgY+7EKAAUAdv7VYMZQknI7YJSGesxHyhn6qD52DV8UcSZs5XwCifcZGMVIE4a5fbmhvbotxC0DLQ0oKohQ==
   dependencies:
     ansi-colors "3.2.3"
     browser-stdout "1.3.1"