upgrade sass

package.json

@@ -55,7 +55,7 @@
     "qunit": "^2.10.0",
     "rollup": "^2.48.0",
     "rollup-plugin-terser": "^7.0.2",
-    "sass": "^1.32.13",
+    "sass": "^1.39.2",
     "yargs": "^15.1.0"
   },
   "browserslist": "> 0.5%, IE 11, not dead",