Bump undici from 6.19.7 to 6.21.1 (#1160)

Bumps [undici](https://github.com/nodejs/undici) from 6.19.7 to 6.21.1.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](https://github.com/nodejs/undici/compare/v6.19.7...v6.21.1)

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

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

package-lock.json

@@ -735,9 +735,10 @@
       }
     },
     "node_modules/undici": {
-      "version": "6.19.7",
+      "version": "6.21.1",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.19.7.tgz",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.1.tgz",
-      "integrity": "sha512-HR3W/bMGPSr90i8AAp2C4DM3wChFdJPLrWYpIS++LxS8K+W535qftjt+4MyjNYHeWabMj1nvtmLIi7l++iq91A==",
+      "integrity": "sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==",
+      "license": "MIT",
       "engines": {
         "node": ">=18.17"
       }
@@ -1357,9 +1358,9 @@
       }
     },
     "undici": {
-      "version": "6.19.7",
+      "version": "6.21.1",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.19.7.tgz",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.21.1.tgz",
-      "integrity": "sha512-HR3W/bMGPSr90i8AAp2C4DM3wChFdJPLrWYpIS++LxS8K+W535qftjt+4MyjNYHeWabMj1nvtmLIi7l++iq91A=="
+      "integrity": "sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ=="
     },
     "universalify": {
       "version": "2.0.0",