Bump flask from 2.3.2 to 2.3.3

Bumps [flask](https://github.com/pallets/flask) from 2.3.2 to 2.3.3.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@2.3.2...2.3.3)

---
updated-dependencies:
- dependency-name: flask
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -7,7 +7,7 @@
 arrow==1.2.3
 backports.functools-lru-cache==1.5 ; python_version < "3.3"
 click==8.1.7
-flask==2.3.2
+flask==2.3.3
 itsdangerous==2.1.2       # via flask
 jinja2==3.1.2            # via flask
 markupsafe==2.1.3         # via jinja2