Bump undici from 6.21.1 to 6.21.3 in /editors/code

Bumps [undici](https://github.com/nodejs/undici) from 6.21.1 to 6.21.3.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](https://github.com/nodejs/undici/compare/v6.21.1...v6.21.3)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.21.3
  dependency-type: indirect
...

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

editors/code/package-lock.json

@@ -5730,9 +5730,9 @@
             "license": "MIT"
         },
         "node_modules/undici": {
-            "version": "6.21.1",
-            "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.1.tgz",
-            "integrity": "sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==",
+            "version": "6.21.3",
+            "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.3.tgz",
+            "integrity": "sha512-gBLkYIlEnSp8pFbT64yFgGE6UIB9tAkhukC23PmMDCe5Nd+cRqKxSjw5y54MK2AZMgZfJWMaNE4nYUHgi1XEOw==",
             "dev": true,
             "license": "MIT",
             "engines": {