increased django version to the lates 2.2.x ! 2.2.17 from Nov 2 2020 before version 3

requirements.txt

@@ -8,7 +8,7 @@ chardet==3.0.4
 coverage==5.3
 cryptography==3.2.1
 cycler==0.10.0
-Django==2.1
+Django==2.2.17
 django-cleanup==4.0.0
 django-common-helpers==0.9.2
 django-cron==0.5.0