chore: bump undici from 6.11.1 to 6.19.2 in /site (#13699)

Bumps [undici](https://github.com/nodejs/undici) from 6.11.1 to 6.19.2.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](https://github.com/nodejs/undici/compare/v6.11.1...v6.19.2)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

site/package.json

@@ -86,7 +86,7 @@
     "tzdata": "1.0.30",
     "ua-parser-js": "1.0.33",
     "ufuzzy": "npm:@leeoniya/ufuzzy@1.0.10",
-    "undici": "6.11.1",
+    "undici": "6.19.2",
     "unique-names-generator": "4.7.1",
     "uuid": "9.0.0",
     "xterm": "5.2.0",

site/pnpm-lock.yaml

@@ -178,8 +178,8 @@ dependencies:
     specifier: npm:@leeoniya/ufuzzy@1.0.10
     version: /@leeoniya/ufuzzy@1.0.10
   undici:
-    specifier: 6.11.1
-    version: 6.11.1
+    specifier: 6.19.2
+    version: 6.19.2
   unique-names-generator:
     specifier: 4.7.1
     version: 4.7.1
@@ -12667,9 +12667,9 @@ packages:
     resolution: {integrity: sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==}
     dev: true
 
-  /undici@6.11.1:
-    resolution: {integrity: sha512-KyhzaLJnV1qa3BSHdj4AZ2ndqI0QWPxYzaIOio0WzcEJB9gvuysprJSLtpvc2D9mhR9jPDUk7xlJlZbH2KR5iw==}
-    engines: {node: '>=18.0'}
+  /undici@6.19.2:
+    resolution: {integrity: sha512-JfjKqIauur3Q6biAtHJ564e3bWa8VvT+7cSiOJHFbX4Erv6CLGDpg8z+Fmg/1OI/47RA+GI2QZaF48SSaLvyBA==}
+    engines: {node: '>=18.17'}
     dev: false
 
   /unicode-canonical-property-names-ecmascript@2.0.0: