chore(deps): update devDependency fastify to v4 (#155)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

package.json

@@ -50,7 +50,7 @@
     "eslint": "8.57.0",
     "eslint-config-airbnb-base": "15.0.0",
     "eslint-plugin-import": "2.29.1",
-    "fastify": "3.29.5",
+    "fastify": "4.26.1",
     "rollup": "3.29.4",
     "semantic-release": "19.0.5",
     "tap": "16.3.10"