Bump psutil from 5.5.1 to 5.6.6

Bumps [psutil](https://github.com/giampaolo/psutil) from 5.5.1 to 5.6.6.
- [Release notes](https://github.com/giampaolo/psutil/releases)
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](giampaolo/psutil@release-5.5.1...release-5.6.6)

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

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

Author: dependabot[bot]

generated.txt

@@ -69,7 +69,7 @@ pexpect==4.6.0
 Pillow==7.0.0
 progressbar==2.5
 protobuf==3.6.1
-psutil==5.5.1
+psutil==5.6.6
 pyasn1==0.4.2
 pycairo==1.16.2
 PyChromecast==4.1.0