[Snyk] Security upgrade fastify from 3.29.5 to 5.7.3

[patinthehat]

Snyk has created this PR to fix 2 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Interpretation Conflict SNYK-JS-FASTIFY-15182642	227
	Allocation of Resources Without Limits or Throttling SNYK-JS-FASTIFY-15182641	59

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🦉 Allocation of Resources Without Limits or Throttling

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Align declared Node support with Fastify 5 requirement

Upgrading to fastify@^5.7.3 while keeping "engines": { "node": ">=12.0.0" } makes the package advertise support for Node versions that Fastify 5 does not support, so users on older Node releases can install this version and then hit startup/runtime failures from the framework itself. Please update the declared Node engine floor (or avoid the Fastify 5 jump) so install-time compatibility matches actual runtime requirements.

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