Bump pyinstaller from 3.6 to 5.13.1

Bumps [pyinstaller](https://github.com/pyinstaller/pyinstaller) from 3.6 to 5.13.1.
- [Release notes](https://github.com/pyinstaller/pyinstaller/releases)
- [Changelog](https://github.com/pyinstaller/pyinstaller/blob/develop/doc/CHANGES-3.rst)
- [Commits](pyinstaller/pyinstaller@v3.6...v5.13.1)

---
updated-dependencies:
- dependency-name: pyinstaller
  dependency-type: direct:development
...

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

requirements_dev.txt

@@ -2,7 +2,7 @@ black==19.10b0
 coverage==5.0.4
 flake8==3.7.9
 mypy==0.770
-pyinstaller==3.6
+pyinstaller==5.13.1
 pylint==2.4.4
 pytest==5.4.1
 pytest-cov==2.8.1