Bump ipython from 7.14.0 to 7.16.3 in /src/backend

Bumps [ipython](https://github.com/ipython/ipython) from 7.14.0 to 7.16.3.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@7.14.0...7.16.3)

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

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

Author: dependabot[bot]

src/backend/setup.py

@@ -21,7 +21,7 @@
         "idna==2.9",
         "importlib-metadata==1.6.0; python_version < '3.8'",
         "ipdb==0.13.2",
-        "ipython==7.14.0",
+        "ipython==7.16.3",
         "ipython-genutils==0.2.0",
         "itsdangerous==1.1.0",
         "jedi==0.17.0",