Update marked requirement from ^0.6.1 to ^0.7.0

Updates the requirements on [marked](https://github.com/markedjs/marked) to permit the latest version.
- [Release notes](https://github.com/markedjs/marked/releases)
- [Commits](markedjs/marked@v0.6.1...v0.7.0)

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

package.json

@@ -29,7 +29,7 @@
   "license": "MIT",
   "dependencies": {
     "hexo-util": "^0.6.3",
-    "marked": "^0.6.2",
+    "marked": "^0.7.0",
     "strip-indent": "^3.0.0"
   },
   "devDependencies": {