Bump boto3 from 1.13.6 to 1.13.11

Bumps [boto3](https://github.com/boto/boto3) from 1.13.6 to 1.13.11.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](https://github.com/boto/boto3/compare/1.13.6...1.13.11)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements-docs.txt

@@ -16,7 +16,7 @@ babel==2.8.0              # via sphinx
 bcrypt==3.1.7             # via -r requirements.txt, flask-bcrypt, paramiko
 billiard==3.6.3.0         # via -r requirements.txt, celery
 blinker==1.4              # via -r requirements.txt, flask-mail, flask-principal, raven
-boto3==1.13.6             # via -r requirements.txt
+boto3==1.13.11            # via -r requirements.txt
 botocore==1.16.11         # via -r requirements.txt, boto3, s3transfer
 celery[redis]==4.4.2      # via -r requirements.txt
 certifi==2020.4.5.1       # via -r requirements.txt, requests

requirements-tests.txt

@@ -10,7 +10,7 @@ aws-sam-translator==1.22.0  # via cfn-lint
 aws-xray-sdk==2.5.0       # via moto
 bandit==1.6.2             # via -r requirements-tests.in
 black==19.10b0            # via -r requirements-tests.in
-boto3==1.13.6             # via aws-sam-translator, moto
+boto3==1.13.11            # via aws-sam-translator, moto
 boto==2.49.0              # via moto
 botocore==1.16.11         # via aws-xray-sdk, boto3, moto, s3transfer
 certifi==2020.4.5.1       # via requests

requirements.txt

@@ -14,7 +14,7 @@ asyncpool==1.0            # via -r requirements.in
 bcrypt==3.1.7             # via flask-bcrypt, paramiko
 billiard==3.6.3.0         # via celery
 blinker==1.4              # via flask-mail, flask-principal, raven
-boto3==1.13.6             # via -r requirements.in
+boto3==1.13.11            # via -r requirements.in
 botocore==1.16.11         # via -r requirements.in, boto3, s3transfer
 celery[redis]==4.4.2      # via -r requirements.in
 certifi==2020.4.5.1       # via -r requirements.in, requests