Lower psutil version

Author: johannalberts

requirements/edx/base.txt

@@ -176,7 +176,7 @@ pdfminer.six==20200517    # via -r requirements/edx/base.in
 piexif==1.1.3             # via -r requirements/edx/base.in
 pillow==7.2.0             # via -r requirements/edx/base.in, edx-enterprise, edx-organizations
 polib==1.1.0              # via edx-i18n-tools
-psutil==2.2.1             # via -r requirements/edx/paver.txt, edx-django-utils
+psutil==1.2.1             # via -r requirements/edx/paver.txt, edx-django-utils
 pycontracts==1.8.12       # via -r requirements/edx/base.in, edx-user-state-client
 pycountry==20.7.3         # via -r requirements/edx/base.in
 pycparser==2.20           # via -r requirements/edx/../edx-sandbox/shared.txt, cffi