test: suppress flask_appbuilder logs in CI

[ktmud]

SUMMARY

FAB and SQL throws a lot of non-essential logs upon app initialization which makes it harder to see actual error logs from tests.

I think I'd make sense to suppress such logs as if there's anything wrong with them, other parts of the app will throw errors anyway.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Check CI logs

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #20870 (e01a69a) into master (a69f016) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #20870   +/-   ##
=======================================
  Coverage   66.27%   66.27%           
=======================================
  Files        1757     1757           
  Lines       66962    66962           
  Branches     7109     7109           
=======================================
  Hits        44380    44380           
  Misses      20767    20767           
  Partials     1815     1815           

Flag	Coverage Δ
hive	53.26% <ø> (ø)
mysql	81.07% <ø> (ø)
postgres	81.14% <ø> (ø)
presto	53.12% <ø> (ø)
python	81.59% <ø> (ø)
sqlite	79.76% <ø> (ø)
unit	50.26% <ø> (ø)

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[ktmud]

Confirmed the logs are now nice and clean.