Bump cssnano from 6.1.2 to 7.0.3

Bumps [cssnano](https://github.com/cssnano/cssnano) from 6.1.2 to 7.0.3.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/[email protected]@7.0.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -32,7 +32,7 @@
 		"@typescript-eslint/eslint-plugin": "^6.19.0",
 		"@typescript-eslint/parser": "^6.19.0",
 		"autoprefixer": "^10.4.17",
-		"cssnano": "^6.0.3",
+		"cssnano": "^7.0.3",
 		"eslint": "^8.56.0",
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.35.1",