Bump boto3 from 1.9.160 to 1.9.245

Bumps [boto3](https://github.com/boto/boto3) from 1.9.160 to 1.9.245.
- [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/1.9.160...1.9.245

)

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

requirements.txt

@@ -13,7 +13,7 @@ scout-apm==2.5.0
 sentry-sdk==0.12.3
 
 # Production dependencies
-boto3==1.9.160
+boto3==1.9.245
 celery==4.2.1
 dj-database-url==0.5.0
 django-anymail==6.0.1