Bump gulp from 4.0.2 to 5.0.0 in /{{cookiecutter.project_slug}}

Bumps [gulp](https://github.com/gulpjs/gulp) from 4.0.2 to 5.0.0.
- [Release notes](https://github.com/gulpjs/gulp/releases)
- [Changelog](https://github.com/gulpjs/gulp/blob/master/CHANGELOG.md)
- [Commits](gulpjs/gulp@v4.0.2...v5.0.0)

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

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

{{cookiecutter.project_slug}}/package.json

@@ -13,7 +13,7 @@
     "gulp-concat": "^2.6.1",
     "concurrently": "^8.0.1",
     "cssnano": "^6.0.0",
-    "gulp": "^4.0.2",
+    "gulp": "^5.0.0",
     "gulp-imagemin": "^7.1.0",
     "gulp-plumber": "^1.2.1",
     "gulp-postcss": "^10.0.0",