chore(deps): bump @webref/css from 5.4.4 to 6.5.7

Bumps [@webref/css](https://github.com/w3c/webref) from 5.4.4 to 6.5.7.
- [Commits](https://github.com/w3c/webref/compare/@webref/css@5.4.4...@webref/css@6.5.7)

---
updated-dependencies:
- dependency-name: "@webref/css"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -67,7 +67,7 @@
     "@sentry/node": "^7.53.1",
     "@use-it/interval": "^1.0.0",
     "@vscode/ripgrep": "^1.15.3",
-    "@webref/css": "^5.4.4",
+    "@webref/css": "^6.5.7",
     "accept-language-parser": "^1.5.0",
     "async": "^3.2.4",
     "chalk": "^5.2.0",

yarn.lock

@@ -3020,10 +3020,10 @@
   resolved "https://registry.yarnpkg.com/@webpack-cli/serve/-/serve-2.0.4.tgz#3982ee6f8b42845437fc4d391e93ac5d9da52f0f"
   integrity sha512-0xRgjgDLdz6G7+vvDLlaRpFatJaJ69uTalZLRSMX5B3VUrDmXcrVA3+6fXXQgmYz7bY9AAgs348XQdmtLsK41A==
 
-"@webref/css@^5.4.4":
-  version "5.4.4"
-  resolved "https://registry.yarnpkg.com/@webref/css/-/css-5.4.4.tgz#91cd765acc1cd92587b2099adb5d2f09608a608c"
-  integrity sha512-x+WAreAVNfSaLWBux9y/9QTKMDpiUbcZZKh72JOFVtm7ZQqmi5/m4YlbYNCu+GjCvuMWOtgwiBx7qf7OvWWykA==
+"@webref/css@^6.5.7":
+  version "6.5.7"
+  resolved "https://registry.yarnpkg.com/@webref/css/-/css-6.5.7.tgz#0e7352669a146b4c701f1cf0f1a3d6a5ef64d8d2"
+  integrity sha512-ol6gkUruFdDjPkADk9daoFVdgqk5glAijFKAi68VtgF/F0urLg4LBtErHoy84W7tAPvULoKnDjX6xVaItKWfNw==
 
 "@xtuc/ieee754@^1.2.0":
   version "1.2.0"