Bump flask from 2.0.1 to 2.3.2 in /ICLR2023

Bumps [flask](https://github.com/pallets/flask) from 2.0.1 to 2.3.2.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@2.0.1...2.3.2)

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

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

Author: dependabot[bot]

ICLR2023/requirements.txt

@@ -86,7 +86,7 @@ fastcore==1.3.26
 fastdownload==0.0.5
 fastprogress==1.0.0
 filelock==3.0.12
-Flask==2.0.1
+Flask==2.3.2
 Flask-Cors==3.0.10
 Flask-Executor==0.9.4
 Flask-FontAwesome==0.1.5