chore: update requirements.txt

Neo23x0 · Neo23x0 · commit e22c79b8c0c2 · 2021-08-25T09:50:55.000+02:00
Since 2019, we can use pywin32 in requirements (as it seems) https://stackoverflow.com/questions/42370339/python-3-6-install-win32api/42400980
diff --git a/requirements.txt b/requirements.txt
@@ -4,4 +4,5 @@ netaddr
 psutil
 rfc5424-logging-handler
 wmi ; sys_platform == 'win32'
+pywin32 ; sys_platform == 'win32'
 yara-python
