build(deps-dev): bump mocha from 6.2.3 to 8.1.3 (#24)

Bumps [mocha](https://github.com/mochajs/mocha) from 6.2.3 to 8.1.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.2.3...v8.1.3)

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

.mocharc.json

@@ -0,0 +1,13 @@
+{
+  "recursive": true,
+  "reporter": "spec",
+  "require": [
+    "test/helpers/init.js",
+    "ts-node/register",
+    "source-map-support/register"
+  ],
+  "timeout": 5000,
+  "watch-extensions": [
+    "ts"
+  ]
+}

package.json

@@ -51,7 +51,7 @@
     "fancy-test": "^1.4.3",
     "globby": "^11.0.1",
     "lodash": "^4.17.11",
-    "mocha": "^6.1.4",
+    "mocha": "^8.1.3",
     "nock": "^13.0.0",
     "proxyquire": "^2.1.0",
     "sinon": "^9.0.1",