Bump cssnano-preset-advanced from 6.1.2 to 7.0.0 in /wwwsrc

Bumps [cssnano-preset-advanced](https://github.com/cssnano/cssnano) from 6.1.2 to 7.0.0.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/cssnano-preset-advanced@6.1.2...cssnano-preset-advanced@7.0.0)

---
updated-dependencies:
- dependency-name: cssnano-preset-advanced
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

wwwsrc/package.json

@@ -8,7 +8,7 @@
     "chart.js": "^4.2.0",
     "couch64": "^1.0.2",
     "cssnano": "^6.0.0",
-    "cssnano-preset-advanced": "^6.0.0",
+    "cssnano-preset-advanced": "^7.0.0",
     "postcss-cli": "^11.0.0",
     "purgecss": "^5.0.0",
     "react": "^18.2.0",