Update dependency sass to v1.89.2 (#614)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -19,6 +19,6 @@
   },
   "homepage": "https://github.com/jenkinsci/dark-theme-plugin#readme",
   "devDependencies": {
-    "sass": "1.89.1"
+    "sass": "1.89.2"
   }
 }