chore(deps-dev): bump mocha from 7.2.0 to 8.0.1 (#45)

* chore(deps-dev): bump mocha from 7.2.0 to 8.0.1

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 8.0.1.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v7.2.0...v8.0.1)

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

* ci(travis): drop node 8 & add node 12

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Sukka <isukkaw@gmail.com>

.travis.yml

@@ -8,8 +8,8 @@ cache:
     - node_modules
 
 node_js:
-  - "8"
   - "10"
+  - "12"
   - "node"
 
 before_script:

package.json

@@ -32,7 +32,7 @@
     "chai": "^4.2.0",
     "eslint": "^7.10.0",
     "eslint-config-hexo": "^3.0.0",
-    "mocha": "^7.1.1",
+    "mocha": "^8.0.1",
     "nyc": "^15.0.0",
     "superstatic": "^7.0.1"
   },