Merge pull request #10621 from maciejbocianski/usb_msd_deps_fix

fix usb_device-msd test python dependencies

Author: 0xc0170

LICENSE.md

@@ -53,3 +53,4 @@ The Python modules used by Mbed tools are used under the following licenses:
 - [hidapi](https://pypi.org/project/hidapi/) - BSD-style
 - [pywin32](https://pypi.org/project/pywin32/) - PSF
 - [wmi](https://pypi.org/project/WMI/) - MIT
+- [psutil](https://pypi.org/project/psutil/) - BSD

requirements.txt

@@ -25,3 +25,4 @@ hidapi>=0.7.99,<0.8.0;platform_system!="Linux"
 cmsis-pack-manager>=0.2.3,<0.3.0
 pywin32==224;platform_system=='Windows'
 wmi==1.4.9;platform_system=='Windows'
+psutil==5.6.2