Bump ipython from 7.6.1 to 7.7.0

Bumps [ipython](https://github.com/ipython/ipython) from 7.6.1 to 7.7.0.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.6.1...7.7.0)

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

Author: dependabot-preview[bot]

test-requirements.txt

@@ -21,7 +21,7 @@ idna==2.8
 immutables==0.9
 importlib-metadata==0.19  # via pluggy, pytest
 ipython-genutils==0.2.0   # via traitlets
-ipython==7.6.1
+ipython==7.7.0
 isort==4.3.21             # via pylint
 jedi==0.14.1
 lazy-object-proxy==1.4.1  # via astroid