Bump mocha from 6.1.2 to 6.1.3 (#16)

Bumps [mocha](https://github.com/mochajs/mocha) from 6.1.2 to 6.1.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.1.2...v6.1.3)

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

yarn.lock

@@ -901,9 +901,9 @@ mkdirp@0.5.1, mkdirp@0.5.x, mkdirp@^0.5.1:
     minimist "0.0.8"
 
 mocha@^6.0.2:
-  version "6.1.2"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.1.2.tgz#31e960580ef709ef5f26bbe760547cf5207b44df"
-  integrity sha512-BgD2/RozoSC3uQK5R0isDcxjqaWw2n5HWdk8njYUyZf2NC79ErO5FtYVX52+rfqGoEgMfJf4fuG0IWh2TMzFoA==
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.1.3.tgz#79d1b370a92dfdb409e6f77bc395ca5afe4cdc93"
+  integrity sha512-QdE/w//EPHrqgT5PNRUjRVHy6IJAzAf1R8n2O8W8K2RZ+NbPfOD5cBDp+PGa2Gptep37C/TdBiaNwakppEzEbg==
   dependencies:
     ansi-colors "3.2.3"
     browser-stdout "1.3.1"
@@ -919,7 +919,7 @@ mocha@^6.0.2:
     minimatch "3.0.4"
     mkdirp "0.5.1"
     ms "2.1.1"
-    node-environment-flags "1.0.4"
+    node-environment-flags "1.0.5"
     object.assign "4.1.0"
     strip-json-comments "2.0.1"
     supports-color "6.0.0"
@@ -949,12 +949,13 @@ nice-try@^1.0.4:
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
   integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
 
-node-environment-flags@1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/node-environment-flags/-/node-environment-flags-1.0.4.tgz#0b784a6551426bfc16d3b2208424dcbc2b2ff038"
-  integrity sha512-M9rwCnWVLW7PX+NUWe3ejEdiLYinRpsEre9hMkU/6NS4h+EEulYaDH1gCEZ2gyXsmw+RXYDaV2JkkTNcsPDJ0Q==
+node-environment-flags@1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/node-environment-flags/-/node-environment-flags-1.0.5.tgz#fa930275f5bf5dae188d6192b24b4c8bbac3d76a"
+  integrity sha512-VNYPRfGfmZLx0Ye20jWzHUjyTW/c+6Wq+iLhDzUI4XmhrDd9l/FozXV3F2xOaXjvp0co0+v1YSR3CMP6g+VvLQ==
   dependencies:
     object.getownpropertydescriptors "^2.0.3"
+    semver "^5.7.0"
 
 nopt@3.x:
   version "3.0.6"
@@ -1226,6 +1227,11 @@ semver@^5.5.0, semver@^5.5.1:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
   integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
 
+semver@^5.7.0:
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
+  integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
+
 set-blocking@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"