Merge pull request #10975 from nextcloud/dependabot/npm_and_yarn/build/node-sass-4.9.3

Bump node-sass from 4.9.2 to 4.9.3 in /build

build/package.json

@@ -23,7 +23,7 @@
     "karma-junit-reporter": "^1.2.0",
     "karma-phantomjs-launcher": "^1.0.4",
     "karma-viewport": "^1.0.2",
-    "node-sass": "~4.9.0",
+    "node-sass": "~4.9.3",
     "phantomjs-prebuilt": "*",
     "sinon": "<= 5.0.7"
   },