Update sass dependencies

requirements.txt

@@ -17,7 +17,7 @@ dj-static==0.0.6
 Django==1.11.25
 django-appconf==1.0.1
 django-bootstrap-form==3.4
-django-compressor==2.2
+django-compressor==2.3
 django-countries==5.3.1
 django-crispy-forms==1.7.2
 django-debug-toolbar==1.9.1
@@ -29,7 +29,7 @@ django-model-utils==3.1.2
 django-nested-admin==2.2.6
 django-nose==1.4.5
 django-reversion==1.10.1
-django-sass-processor==0.7
+django-sass-processor==0.7.3
 django-settings-export==1.2.1
 django-sitetree==1.10.0
 django-taggit==0.18.0
@@ -46,7 +46,7 @@ httplib2==0.11.3
 icalendar==4.0.2
 idna==2.7
 jsonfield==2.0.2
-libsass==0.14.5
+libsass==0.19.3
 lxml==4.0.0
 mysqlclient==1.3.13
 nose==1.3.7
@@ -70,7 +70,7 @@ pytz==2018.4
 rcssmin==1.0.6
 repoze.who==2.3
 requests==2.19.1
-rjsmin==1.0.12
+rjsmin==1.1.0
 rsa==3.4.2
 six==1.11.0
 sqlparse==0.2.4