1. a record's generated toString:
   NaiveDb[url=jdbc:postgresql://db/app, password=hunter2]
   DbProperties overrides toString: DbProperties[url=jdbc:postgresql://db/app, username=app, password=<redacted:7 chars>]
2. /actuator/env and /actuator/configprops, Boot 4.1.2 defaults:
   GET /actuator/env/db.password                  value shown: ******
   GET /actuator/env/internal.signing.material    value shown: ******
   GET /actuator/configprops                      body contains the password: false
3. same, management.endpoint.env.show-values=ALWAYS and configprops.show-values=ALWAYS:
   GET /actuator/env/db.password                  value shown: hunter2
   GET /actuator/env/internal.signing.material    value shown: also-secret-but-not-named-like-one
   GET /actuator/configprops                      body contains the password: true