chore(deps): bump chalk from 3.0.0 to 4.0.0 (#176)

Bumps [chalk](https://github.com/chalk/chalk) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/chalk/chalk/releases)
- [Commits](chalk/chalk@v3.0.0...v4.0.0)

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

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

package.json

@@ -37,7 +37,7 @@
   },
   "dependencies": {
     "bluebird": "^3.5.0",
-    "chalk": "^3.0.0",
+    "chalk": "^4.0.0",
     "hexo-fs": "^2.0.0",
     "hexo-util": "^1.0.0",
     "moment": "^2.18.0",