Bump gulp-if from 2.0.2 to 3.0.0 in /arctic/static/arctic

Bumps [gulp-if](https://github.com/robrich/gulp-if) from 2.0.2 to 3.0.0.
- [Release notes](https://github.com/robrich/gulp-if/releases)
- [Commits](robrich/gulp-if@2.0.2...3.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

arctic/static/arctic/package.json

@@ -38,7 +38,7 @@
     "gulp-concat": "^2.6.1",
     "gulp-cssnano": "^2.1.3",
     "gulp-extname": "^0.2.2",
-    "gulp-if": "^2.0.2",
+    "gulp-if": "^3.0.0",
     "gulp-imagemin": "^6.0.0",
     "gulp-load-plugins": "^2.0.0",
     "gulp-sass": "^4.0.2",