Bump del from 5.1.0 to 6.0.0

Bumps [del](https://github.com/sindresorhus/del) from 5.1.0 to 6.0.0.
- [Release notes](https://github.com/sindresorhus/del/releases)
- [Commits](https://github.com/sindresorhus/del/compare/v5.1.0...v6.0.0)

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

package.json

@@ -43,7 +43,7 @@
         "cpy": "^8.1.1",
         "cross-env": "^7.0.2",
         "cssnano": "^4.1.10",
-        "del": "^5.1.0",
+        "del": "^6.0.0",
         "eslint": "^7.9.0",
         "eslint-config-airbnb-base": "^14.2.0",
         "eslint-config-prettier": "^6.11.0",