chore(deps): update flask requirement from ==1.1.* to ==3.0.*

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@1.1.0...3.0.3)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-Flask==1.1.*
+Flask==3.0.*
 gunicorn==20.0.*
 markupsafe==2.0.1
 requests==2.28.*