chore(deps-dev): bump superstatic from 6.0.4 to 7.0.1 (#58)

Bumps [superstatic](https://github.com/firebase/superstatic) from 6.0.4 to 7.0.1.
- [Release notes](https://github.com/firebase/superstatic/releases)
- [Commits](firebase/superstatic@v6.0.4...v7.0.1)

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

@@ -34,7 +34,7 @@
     "eslint-config-hexo": "^3.0.0",
     "mocha": "^7.1.1",
     "nyc": "^15.0.0",
-    "superstatic": "^6.0.4"
+    "superstatic": "^7.0.1"
   },
   "dependencies": {
     "chalk": "^2.4.1",