fix(deps): update dependency flask to v3

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

pyproject.toml

@@ -5,7 +5,7 @@ requires-python = ">=3.9"
 dependencies = [
   # from setup.py
   "connexion[swagger-ui] ~= 2.14",
-  "Flask ~= 1.1",
+  "Flask ~=3.1",
   "flask-healthz ~= 0.0.3",
   "Flask-Migrate ~= 2.7",
   "Flask-SQLAlchemy ~= 2.5",