Upgrade ccdb5-api from 1.15 to 1.15.1

Address minor bug in 1.15, see release notes:

https://github.com/cfpb/ccdb5-api/releases/tag/1.15.1

Author: chosak

requirements/libraries.txt

@@ -42,4 +42,4 @@ wagtailcharts==0.6.2
 whitenoise==6.7.0
 
 # This package is installed from GitHub.
-https://github.com/cfpb/ccdb5-api/releases/download/1.15/ccdb5_api-1.15-py3-none-any.whl
+https://github.com/cfpb/ccdb5-api/releases/download/1.15.1/ccdb5_api-1.15.1-py3-none-any.whl