chore(deps): bump fastify from 5.7.2 to 5.7.4 in /examples/custom-receiver

[dependabot]

Bumps fastify from 5.7.2 to 5.7.4.

Release notes

Sourced from fastify's releases.

v5.7.4

Full Changelog: fastify/fastify@v5.7.3...v5.7.4

v5.7.3

⚠️ Security Release

• Fix GHSA-mrq3-vjjr-p77c CVE-2026-25224.

What's Changed

• docs: update Reply.send() documentation for string serialization by @​mcollina in fastify/fastify#6466
• chore: ignore agents config files by @​mcollina in fastify/fastify#6474
• docs: update vulnerability reporting to use GitHub Security by @​mcollina in fastify/fastify#6475

Full Changelog: fastify/fastify@v5.7.2...v5.7.3

Commits

• 4682a78 Bumped v5.7.4
• 49468ed Bumped v5.7.3
• eb11156 Merge commit from fork
• d98ce2a docs: update vulnerability reporting to use GitHub Security (#6475)
• 17172c4 Ignore agents config files (#6474)
• b48826f docs: update Reply.send() documentation for string serialization (#6466)
• See full diff in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.44%. Comparing base (d9fc3ee) to head (e903f25).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2777   +/-   ##
=======================================
  Coverage   93.44%   93.44%           
=======================================
  Files          37       37           
  Lines        7677     7677           
  Branches      669      669           
=======================================
  Hits         7174     7174           
  Misses        498      498           
  Partials        5        5           

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