Bump psutil from 5.6.3 to 5.6.6

Bumps [psutil](https://github.com/giampaolo/psutil) from 5.6.3 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-5.6.3...release-5.6.6)

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

Author: dependabot[bot]

requirements.txt

@@ -50,7 +50,7 @@ plotly-express==0.4.0
 plotnine==0.5.1
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-psutil==5.6.3
+psutil==5.6.6
 ptyprocess==0.6.0
 Pygments==2.4.2
 pyjanitor==0.17.2