chore: bump FAB to 3.4.3

[dpgaspar]

SUMMARY

Bump FAB to 3.4.3 with the following improvements:

fix: openapi on and off config flag (#1770) [Daniel Vaz Gaspar]
fix: data not defined in azure oauth (#1769) [Dalton Pearson]
fix: Handle authorize_access_token exception (#1766) [Michał Konarski]
fix: Set role and confirm password while adding user mandatory (#1758) [Mayur]
fix: required roles on user form not showing error msg (#1772) [Daniel Vaz Gaspar]
fix: make servers be actual servers on swagger, full endpoint paths (#1773) [Daniel Vaz Gaspar]
docs: adds missing config key FAB_OPENAPI_SERVERS (#1776)

TESTING INSTRUCTIONS

Normal Superset bootstrap, verify the security views and DB authentication

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

[villebro]

LGTM

[codecov]

Codecov Report

Merging #17964 (db9d62c) into master (3b5cee4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #17964   +/-   ##
=======================================
  Coverage   67.07%   67.07%           
=======================================
  Files        1609     1609           
  Lines       64905    64905           
  Branches     6868     6868           
=======================================
  Hits        43537    43537           
  Misses      19502    19502           
  Partials     1866     1866           

Flag	Coverage Δ
hive	53.29% <ø> (ø)
mysql	82.19% <ø> (ø)
postgres	82.24% <ø> (ø)
presto	53.13% <ø> (ø)
python	82.68% <ø> (ø)
sqlite	81.92% <ø> (ø)

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