chore(deps) Update dependency Flask to v3

Author: renovate[bot]

pyproject.toml

@@ -97,10 +97,10 @@ packages = [
 ]
 readme = "readme.md"
 repository = "https://github.com/atlas-bi/Hub"
-version = "2.12.3"
+version = "2.12.4"
 
 [tool.poetry.dependencies]
-Flask = "^2.0.1"
+Flask = "^3.0.0"
 Flask-APScheduler = "^1.12.2"
 Flask-Assets = "^2.0"
 Flask-Caching = "^2.0.0"