Bump node-sass from 4.13.0 to 4.13.1

Bumps [node-sass](https://github.com/sass/node-sass) from 4.13.0 to 4.13.1.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v4.13.0...v4.13.1)

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

Author: dependabot[bot]

package-lock.json

@@ -12,7 +12,7 @@
         "buefy": "^0.8.8",
         "gridsome": "^0.7.0",
         "moment": "^2.29.1",
-        "node-sass": "^4.13.0",
+        "node-sass": "^4.13.1",
         "sass-loader": "^8.0.0",
         "vue-awesome-countdown": "^1.1.4"
     }