Merge branch '258964-update-node-sass-from-4-12-to-4-14' into 'master'

Update node-sass from 4.12.0 to 4.14.1

Closes #258964 and #258963

See merge request gitlab-org/gitlab!43808

changelogs/unreleased/258964-update-node-sass-from-4-12-to-4-14.yml

+---
+title: Update node-sass from 4.12.0 to 4.14.1
+merge_request: 43808
+author: Takuya Noguchi
+type: other

package.json

@@ -204,7 +204,7 @@
     "karma-webpack": "^4.0.2",
     "markdownlint-cli": "0.23.2",
     "md5": "^2.2.1",
-    "node-sass": "^4.12.0",
+    "node-sass": "^4.14.1",
     "nodemon": "^2.0.4",
     "pixelmatch": "^4.0.2",
     "postcss": "^7.0.14",