build(deps): bump pyinstaller from 4.6 to 5.0 in /requirements

Bumps [pyinstaller](https://github.com/pyinstaller/pyinstaller) from 4.6 to 5.0.
- [Release notes](https://github.com/pyinstaller/pyinstaller/releases)
- [Changelog](https://github.com/pyinstaller/pyinstaller/blob/develop/doc/CHANGES.rst)
- [Commits](pyinstaller/pyinstaller@v4.6...v5.0)

---
updated-dependencies:
- dependency-name: pyinstaller
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements/requirements-ci.txt

@@ -560,7 +560,7 @@ pygments==2.7.4
     #   ipython
     #   pdbpp
     #   readme-renderer
-pyinstaller==4.6
+pyinstaller==5.0
     # via -r requirements-ci.in
 pyinstaller-hooks-contrib==2020.7
     # via pyinstaller