Update flask requirement from ~=3.1.1 to ~=3.1.2

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](pallets/flask@3.1.1...3.1.2)

---
updated-dependencies:
- dependency-name: flask
  dependency-version: 3.1.2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 robotframework~=7.3
 config~=0.5.1
-Flask~=3.1.1
+Flask~=3.1.2
 bcrypt~=4.3.0
 flask-mysqldb~=2.0.0
 pytz~=2025.2