Bump flask from 3.1.0 to 3.1.1

Bumps [flask](https://github.com/pallets/flask) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.1.0...3.1.1)

---
updated-dependencies:
- dependency-name: flask
  dependency-version: 3.1.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ blinker==1.9.0
 cachelib==0.13.0
 click==8.1.8
 coverage==7.6.12
-Flask==3.1.0
+Flask==3.1.1
 Flask-Session==0.8.0
 greenlet==3.1.1
 iniconfig==2.0.0