chore(deps): bump chalk from 3.0.0 to 4.0.0 (#178)

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

@@ -39,7 +39,7 @@
     "abbrev": "^1.1.1",
     "acorn": "^7.1.1",
     "bluebird": "^3.5.5",
-    "chalk": "^3.0.0",
+    "chalk": "^4.0.0",
     "command-exists": "^1.2.8",
     "hexo-fs": "^3.0.1",
     "hexo-log": "^1.0.0",