chore: Bump Flask-AppBuilder constraints (apache#22927)

(cherry picked from commit 21a2e7b)

Author: john-bodley

setup.py

@@ -83,7 +83,7 @@ def get_git_sha() -> str:
         "cryptography>=3.3.2",
         "deprecation>=2.1.0, <2.2.0",
         "flask>=2.0.0, <3.0.0",
-        "flask-appbuilder>=4.1.6, <5.0.0",
+        "flask-appbuilder>=4.2.0, <5.0.0",
         "flask-caching>=1.10.0",
         "flask-compress",
         "flask-talisman",