Remove warning about depricated schema on startup

[hardillb]

Description

Seen in the Staging startup logs:

(node:1) [FSTDEP021] DeprecationWarning: You are using the deprecated json shorthand schema on route /api/v1/user/tokens/:id. Specify full object schema instead. It will be removed in `fastify@v5`
(Use `node --trace-deprecation ...` to show where the warning was created)

this should remove the warning

Context

fastify/fastify#4833

Related Issue(s)

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• Includes a DB migration? -> add the area:migration label

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.49%. Comparing base (8a69d29) to head (bdcc606).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5823   +/-   ##
=======================================
  Coverage   76.49%   76.49%           
=======================================
  Files         369      369           
  Lines       17969    17969           
  Branches     4189     4189           
=======================================
  Hits        13745    13745           
  Misses       4224     4224           

Flag	Coverage Δ
backend	76.49% <ø> (ø)

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