chore(deps): update dependency flask to v3

Author: renovate[bot]

kinde_flask/pyproject.toml

@@ -18,7 +18,7 @@ classifiers = [
 ]
 dependencies = [
     "kinde-python-sdk >=1.2.6",
-    "flask >=2.0.0, <3.0.0",
+    "flask >=3.1.2, <3.2.0",
     "python-dotenv >=0.19.0, <1.0.0",
 ]