chore(deps-dev): bump fastify from 5.2.0 to 5.2.1

Bumps [fastify](https://github.com/fastify/fastify) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](fastify/fastify@v5.2.0...v5.2.1)

---
updated-dependencies:
- dependency-name: fastify
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

packages/fastify-html-plugin/package.json

@@ -29,7 +29,7 @@
     "@types/jsdom": "^21.1.7",
     "@types/node": "^22.10.1",
     "c8": "^10.1.3",
-    "fastify": "^5.2.0",
+    "fastify": "^5.2.1",
     "jsdom": "^25.0.1",
     "tsd": "^0.31.2",
     "tslib": "^2.8.1"