⬆ Update flask requirement from <3.0.0,>=1.1.2 to >=1.1.2,<4.0.0 (#12747)

Updates the requirements on [flask](https://github.com/pallets/flask) to permit the latest version.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/flask/compare/1.1.2...3.0.3)

---
updated-dependencies:
- dependency-name: flask
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-tests.txt

@@ -5,7 +5,7 @@ coverage[toml] >= 6.5.0,< 8.0
 mypy ==1.8.0
 dirty-equals ==0.6.0
 sqlmodel==0.0.22
-flask >=1.1.2,<3.0.0
+flask >=1.1.2,<4.0.0
 anyio[trio] >=3.2.1,<4.0.0
 PyJWT==2.8.0
 pyyaml >=5.3.1,<7.0.0