Bump apiflask from 1.0.0 to 1.1.1 in /api

Bumps [apiflask](https://github.com/apiflask/apiflask) from 1.0.0 to 1.1.1.
- [Release notes](https://github.com/apiflask/apiflask/releases)
- [Changelog](https://github.com/apiflask/apiflask/blob/main/docs/changelog.md)
- [Commits](https://github.com/apiflask/apiflask/compare/1.0.0...1.1.1)

---
updated-dependencies:
- dependency-name: apiflask
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

api/requirements.txt

@@ -5,7 +5,7 @@ Flask_SQLAlchemy==2.5.1
 python-dotenv==0.20.0
 pymysql==1.0.2
 pyjwt==2.3.0
-apiflask==1.0.0
+apiflask==1.1.1
 flask-cors==3.0.10
 bcrypt==3.2.2
 pytest~=7.1.2