Update dependency cssnano to v7

Author: renovate[bot]

package.json

@@ -94,7 +94,7 @@
 		"@typescript-eslint/parser": "6.21.0",
 		"@vitejs/plugin-react": "4.3.4",
 		"autoprefixer": "10.4.20",
-		"cssnano": "6.1.2",
+		"cssnano": "7.0.6",
 		"eslint": "8.57.1",
 		"eslint-config-prettier": "9.1.0",
 		"eslint-plugin-jest": "28.9.0",