Bump pulsectl from 20.4.3 to 20.5.0 (#1731)

Bumps [pulsectl](https://github.com/mk-fg/python-pulse-control) from 20.4.3 to 20.5.0.
- [Release notes](https://github.com/mk-fg/python-pulse-control/releases)
- [Changelog](https://github.com/mk-fg/python-pulse-control/blob/master/CHANGES.rst)
- [Commits](https://github.com/mk-fg/python-pulse-control/commits)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements.txt

@@ -10,7 +10,7 @@ gitpython==3.1.2
 jinja2==2.11.2
 packaging==20.4
 ptvsd==4.3.2
-pulsectl==20.4.3
+pulsectl==20.5.0
 pytz==2020.1
 pyudev==0.22.0
 ruamel.yaml==0.15.100