Bump ipython from 7.5.0 to 7.16.3

Bumps [ipython](https://github.com/ipython/ipython) from 7.5.0 to 7.16.3.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.5.0...7.16.3)

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

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

Author: dependabot[bot]

requirements.txt

@@ -28,7 +28,7 @@ future==0.16.0
 gunicorn==19.9.0
 idna==2.7
 imgurpython==1.1.7
-ipython==7.5.0
+ipython==7.16.3
 itsdangerous==0.24
 Jinja2==2.11.3
 json-cfg==0.4.2