Require newer version of cfoundry. Resolves a trace logging bug. [#63771746]

See pull requests for explanations:
https://github.com/cloudfoundry/cf-uaa-lib/pull/7
https://github.com/cloudfoundry/cfoundry/pull/27
Add a changelog. [#63771746]

CHANGELOGs are a common way to communicate concise descriptions of changes to consumers of this library.
Bump cfoundry to 4.7.2.rc1
Merge branch 'fix_token_issuer_logging'