chore(deps): bump undici from 6.19.8 to 6.21.1

Bumps [undici](https://github.com/nodejs/undici) from 6.19.8 to 6.21.1.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.19.8...v6.21.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -22580,9 +22580,9 @@ __metadata:
   linkType: hard
 
 "undici@npm:^6.19.5":
-  version: 6.19.8
-  resolution: "undici@npm:6.19.8"
-  checksum: 2f812769992a187d9c55809b6943059c0bb1340687a0891f769de02101342dded0b9c8874cd5af4a49daaeba8284101d74a1fbda4de04c604ba7a5f6190b9ea2
+  version: 6.21.1
+  resolution: "undici@npm:6.21.1"
+  checksum: 2efc52f77224754a2efa7cb6459829f3c93c8321d17e76f574a904b353783d95073b6116f5b15637c4845d98c9dc5a019b809cb9d63b3529267e7727c49f6996
   languageName: node
   linkType: hard