Updater requirements.txt file

requirements.txt

 -e git+git://github.com/fredj/cssmin.git@master#egg=cssmin
 Django==2.2.5
 IPy==1.00
-Markdown==3.1
+Markdown==3.1.1
 bencode.py==2.0.0
-django-countries==5.3.3
+django-countries==5.5
 jsmin==2.2.2
 pgpdump==1.5
 pytz>=2017.3
-parse==1.12.0
+parse==1.12.1
 django-jinja==2.4.1
 sqlparse==0.3.0
 django-csp==3.5