Bump httpie from 2.4.0 to 3.1.0

Bumps [httpie](https://github.com/httpie/httpie) from 2.4.0 to 3.1.0.
- [Release notes](https://github.com/httpie/httpie/releases)
- [Changelog](https://github.com/httpie/httpie/blob/master/CHANGELOG.md)
- [Commits](https://github.com/httpie/httpie/compare/2.4.0...3.1.0)

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

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

requirements.txt

@@ -19,7 +19,7 @@ Flask-Moment==1.0.1
 Flask-SQLAlchemy==2.5.1
 Flask-WTF==0.15.1
 greenlet==1.1.0
-httpie==2.4.0
+httpie==3.1.0
 idna==2.10
 itsdangerous==2.0.1
 Jinja2==3.0.1