upgrade dependencies

tests/requirements.txt

@@ -1,58 +1,39 @@
-atomicwrites==1.3.0
-attrs==19.1.0
-Babel==2.6.0
 beautifulsoup4==4.8.0
 certifi==2019.3.9
 chardet==3.0.4
-defusedxml==0.5.0
-django-admin-sortable2==0.7.5
+django-admin-sortable2==0.7.6
 django-allauth==0.40.0
-django-angular==2.2.4
+django-angular==2.3
 django-appconf==1.0.3
-django-classy-tags==0.9.0
-django-cms==3.7.1
+django-classy-tags==1.0.0
+django-cms==3.7.2
 django-entangled==0.3
-django-filer==1.6.0
+django-filer==1.7.1
 django-formtools==2.1
 django-fsm==2.6.1
 django-fsm-admin==1.2.4
-django-haystack==2.8.1
 django-ipware==2.1.0
-django-js-asset==1.2.2
-django-mptt==0.10.0
-django-parler==1.9.2
-django-parler-rest==2.0
-django-phonenumber-field==2.2.0
-django-polymorphic==2.0.3
-django-post-office==3.2.1
-django-rest-auth==0.9.3
-django-sass-processor==0.7.5
-django-sekizai==0.10.0
-django-select2==6.3.1
-django-treebeard==4.3
+django-mptt==0.11.0
+django-parler==2.0.1
+django-parler-rest==2.1
+django-phonenumber-field==4.0.0
+django-polymorphic==2.1.2
+django-post-office==3.4.0
+django-rest-auth==0.9.5
+django-sass-processor==0.8
+django-sekizai==1.1.0
+django-select2==7.2.3
+django-treebeard==4.3.1
 djangocms-admin-style==1.3.0
 djangocms-bootstrap==1.1.2
-djangocms-cascade==1.1.9
+djangocms-cascade==1.3.1
 djangocms-text-ckeditor==3.8.0
 djangorestframework==3.11.0
-drf-haystack==1.8.4
 easy-thumbnails==2.6
-elasticsearch==1.7.0
 factory-boy==2.11.1
-Faker==1.0.4
-filelock==3.0.10
-html5lib==1.0.1
-idna==2.8
-importlib-metadata==1.3.0
-inflection==0.3.1
-jsonfield==2.0.2
-libsass==0.18.0
-lxml==4.3.2
-more-itertools==6.0.0; python_version > '2.7'
-oauthlib==3.0.1
-packaging==19.2
-pathlib2==2.3.5; python_version > '2.7'
-phonenumbers==8.10.7
+jsonfield==3.1.0
+libsass==0.20.0
+lxml==4.5.0
 pillow==7.0.0
 pluggy==0.13.1
 py==1.8.0
@@ -65,14 +46,8 @@ python3-openid==3.1.0
 pytz==2018.9
 requests==2.21.0
 requests-oauthlib==1.2.0
-six==1.12.0
-soupsieve==1.8
 sqlparse==0.3.0
 stripe==1.53.0
 text-unidecode==1.2
-toml==0.10.0
 tox==3.7.0
-Unidecode==1.0.23
 urllib3==1.25.7
-webencodings==0.5.1
-zipp==0.6.0