Bump svgo from 2.8.0 to 3.0.0 in /searx/static/themes/simple

Bumps [svgo](https://github.com/svg/svgo) from 2.8.0 to 3.0.0.
- [Release notes](https://github.com/svg/svgo/releases)
- [Changelog](https://github.com/svg/svgo/blob/main/CHANGELOG-old.md)
- [Commits](https://github.com/svg/svgo/compare/v2.8.0...v3.0.0)

---
updated-dependencies:
- dependency-name: svgo
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

searx/static/themes/simple/package.json

@@ -18,7 +18,7 @@
     "stylelint": "^13.13.1",
     "stylelint-config-standard": "^22.0.0",
     "ejs": "^3.1.8",
-    "svgo": "^2.8.0"
+    "svgo": "^3.0.0"
   },
   "dependencies": {
     "autocomplete-js": "2.7.1",