Bump psutil from 5.6.3 to 5.6.6 in /requirements

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] <[email protected]>

Author: dependabot[bot]

requirements/dev.txt

@@ -31,13 +31,12 @@ future==0.18.0            # via cookiecutter
 git-url-parse==1.2.2      # via python-gilt
 identify==1.4.7           # via pre-commit
 idna==2.8                 # via requests
-importlib-metadata==0.23  # via pluggy, pre-commit, pytest
-importlib-resources==1.0.2  # via pre-commit
+importlib-metadata==0.23  # via pre-commit
 jinja2-time==0.2.0        # via cookiecutter
 jinja2==2.10.3            # via ansible, click-completion, cookiecutter, jinja2-time, molecule
 markupsafe==1.1.1         # via jinja2
 mccabe==0.6.1             # via flake8
-molecule==2.22
+molecule==2.22            # via -r dev.in
 monotonic==1.5            # via fasteners
 more-itertools==7.2.0     # via pytest, zipp
 nodeenv==1.3.3            # via pre-commit
@@ -46,11 +45,11 @@ paramiko==2.6.0           # via molecule
 pathspec==0.6.0           # via yamllint
 pbr==5.4.3                # via git-url-parse, python-gilt
 pexpect==4.7.0            # via molecule
-pip-tools==4.1.0
+pip-tools==4.1.0          # via -r dev.in
 pluggy==0.13.0            # via pytest
 poyo==0.5.0               # via cookiecutter
 pre-commit==1.18.3        # via molecule
-psutil==5.6.3             # via molecule
+psutil==5.6.6             # via molecule
 ptyprocess==0.6.0         # via pexpect
 py==1.8.0                 # via pytest
 pycodestyle==2.5.0        # via flake8
@@ -63,7 +62,6 @@ python-dateutil==2.8.0    # via arrow
 python-gilt==1.2.1        # via molecule
 pyyaml==5.1.2             # via ansible, ansible-lint, aspy.yaml, molecule, pre-commit, python-gilt, yamllint
 requests==2.22.0          # via cookiecutter
-ruamel.yaml.clib==0.2.0   # via ruamel.yaml
 ruamel.yaml==0.16.5       # via ansible-lint
 sh==1.12.14               # via molecule, python-gilt
 shellingham==1.3.1        # via click-completion