build(deps-dev): bump undici from 6.21.2 to 7.16.0

Bumps [undici](https://github.com/nodejs/undici) from 6.21.2 to 7.16.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.21.2...v7.16.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 7.16.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -70,7 +70,7 @@
     "prettier": "^3.5.3",
     "ts-jest": "29.4.4",
     "typescript": "5.9.2",
-    "undici": "^6.21.3",
+    "undici": "^7.16.0",
     "xhr-mock": "^2.5.1"
   },
   "resolutions": {

yarn.lock

@@ -474,7 +474,7 @@ __metadata:
     prettier: ^3.5.3
     ts-jest: 29.4.4
     typescript: 5.9.2
-    undici: ^6.21.3
+    undici: ^7.16.0
     xhr-mock: ^2.5.1
   languageName: unknown
   linkType: soft
@@ -21052,10 +21052,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"undici@npm:^6.21.3":
-  version: 6.21.3
-  resolution: "undici@npm:6.21.3"
-  checksum: a2af0601deece36acbcc11ef722f36ad3c1e035d3065b9fbb36987487f7b69904046fa95c18f228a872ca45441f156fcaacd948fc920b0a97d0c1ab78ea63c04
+"undici@npm:^7.16.0":
+  version: 7.16.0
+  resolution: "undici@npm:7.16.0"
+  checksum: dca60e323e44c2d408e0d1f5eb540632ad4e75631d5b6fcd7791876bab54e0e263a66e5606eaa717d436b2db5988c2f4af912dfa221ce53e3fc7fcb7d224c9cd
   languageName: node
   linkType: hard