fix: upgrade fastify from 4.18.0 to 4.19.0 (#281)

Snyk has created this PR to upgrade fastify from 4.18.0 to 4.19.0.

See this package in npm:
https://www.npmjs.com/package/fastify

See this project in Snyk:
https://app.snyk.io/org/nodeshift-agg/project/53f94480-e7ae-41d2-985c-270fae345664?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

package.json

@@ -36,7 +36,7 @@
     "cloudevents": "^7.0.1",
     "commander": "^11.0.0",
     "death": "^1.1.0",
-    "fastify": "^4.18.0",
+    "fastify": "^4.19.0",
     "fastify-raw-body": "^4.2.0",
     "js-yaml": "^4.1.0",
     "node-os-utils": "^1.3.7",