ENG-3859: Bump uvicorn 0.30.6 -> 0.47.0

[rayharnett]

Summary

• Bump uvicorn[standard] from ~=0.30.0 (resolved 0.30.6) to ~=0.47.0
• Bump watchfiles from ==0.19.0 to ~=1.2.0 (required by uvicorn 0.47.0 which needs watchfiles>=0.20)
• No breaking API changes — fides only imports Config and Server from uvicorn, both unchanged

Closes ENG-3859

Test plan

• CI passes
• Static analysis clean (ruff check passes with project config)
• No code changes needed — only dependency version bumps

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[github-actions]

Dependency Review

The following issues were found:

• ✅ 0 vulnerable package(s)

See the Details below.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA 3c7f218.

Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

Scanned Files

• uv.lock

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.61%. Comparing base (2c3849a) to head (3c7f218).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8215   +/-   ##
=======================================
  Coverage   85.61%   85.61%           
=======================================
  Files         658      658           
  Lines       42869    42869           
  Branches     5019     5019           
=======================================
+ Hits        36701    36702    +1     
  Misses       5063     5063           
+ Partials     1105     1104    -1     

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