Merge pull request #3166 from ccnmtl/dependabot/pip/s3transfer-0.16.0

Bump s3transfer from 0.15.0 to 0.16.0

Author: ndittren

requirements.txt

@@ -82,7 +82,7 @@ django-pageblocks==1.3.0  # pyup: <2.0.0
 django-quizblock==1.3.2
 django-simple-captcha==0.6.2
 gunicorn==23.0.0
-s3transfer==0.15.0
+s3transfer==0.16.0
 jmespath==1.0.1
 
 botocore>=1.15.0,<1.42.0