Upgrade dependencies

requirements.txt

@@ -3,8 +3,8 @@ attrs==19.1.0
 beautifulsoup4==4.7.1
 bleach==3.1.0
 blinker==1.4
-boto3==1.9.182
-botocore==1.12.182
+boto3==1.9.183
+botocore==1.12.183
 certifi==2019.6.16
 chardet==3.0.4
 ddtrace==0.26.0
@@ -17,8 +17,8 @@ django-storages==1.7.1
 docutils==0.14
 idna==2.8
 jmespath==0.9.4
-oauthlib==3.0.1
-Pillow==6.0.0
+oauthlib==3.0.2
+Pillow==6.1.0
 psutil==5.6.3
 psycopg2==2.8.3
 python-dateutil==2.8.0