build(deps-dev): bump tap from 16.3.10 to 21.0.0

Bumps [tap](https://github.com/tapjs/tapjs) from 16.3.10 to 21.0.0.
- [Release notes](https://github.com/tapjs/tapjs/releases)
- [Commits](https://github.com/tapjs/tapjs/compare/v16.3.10...tap@21.0.0)

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

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

package.json

@@ -42,7 +42,7 @@
     "fastify": "^5.0.0-alpha.3",
     "snazzy": "^9.0.0",
     "standard": "^17.1.0",
-    "tap": "^18.7.1",
+    "tap": "^21.0.0",
     "tsd": "^0.31.0"
   },
   "dependencies": {