Bump ipython from 7.15.0 to 7.16.3

Bumps [ipython](https://github.com/ipython/ipython) from 7.15.0 to 7.16.3.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.15.0...7.16.3)

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

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

requirements.txt

@@ -19,7 +19,7 @@ google-auth==1.16.1
 humanize==0.5.1
 idna==2.9
 ipdb==0.13.2
-ipython==7.15.0
+ipython==7.16.3
 ipython-genutils==0.2.0
 iso8601==0.1.12
 itsdangerous==1.1.0