chore(deps): update dependency gulp-sass to v6 (#2112)

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

package.json

@@ -81,7 +81,7 @@
     "gulp-dest": "0.2.3",
     "gulp-header": "2.0.9",
     "gulp-rename": "2.0.0",
-    "gulp-sass": "5.1.0",
+    "gulp-sass": "6.0.0",
     "gulp-size": "4.0.1",
     "gulp-sourcemaps": "3.0.0",
     "gulp-template": "5.0.0",