chore(deps-dev): bump fastify from 4.11.0 to 4.12.0

Bumps [fastify](https://github.com/fastify/fastify) from 4.11.0 to 4.12.0.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](fastify/fastify@v4.11.0...v4.12.0)

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

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

package.json

@@ -49,7 +49,7 @@
     "asciidoctor": "^2.2.6",
     "auto-changelog": "^2.4.0",
     "ejs": "^3.1.6",
-    "fastify": "^4.5.2",
+    "fastify": "^4.12.0",
     "fs-extra": "^10.0.0",
     "jest": "^29.3.1",
     "joi": "^17.6.0",