chore(deps): bump undici from 7.20.0 to 7.21.0 in the dependencies group (#45)

Bumps the dependencies group with 1 update: [undici](https://github.com/nodejs/undici).


Updates `undici` from 7.20.0 to 7.21.0
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v7.20.0...v7.21.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 7.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

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

Author: dependabot[bot]

package.json

@@ -57,6 +57,6 @@
   "dependencies": {
     "combine-async-iterators": "^3.0.0",
     "http-link-header": "^1.1.3",
-    "undici": "7.20.0"
+    "undici": "7.21.0"
   }
 }