Deploying to Heroku with Postgres config warning

Using the Third Edition example for deploying to Heroku with Postgres, I get a compile warning.

BTW. Everything compiles fine (since it is just a warning), but it would be great to get a completely clean compile.

> warning: 'forClient(cipherSuites:minimumTLSVersion:maximumTLSVersion:certificateVerification:trustRoots:certificateChain:privateKey:applicationProtocols:shutdownTimeout:keyLogCallback:)' is deprecated: renamed to 'makeClientConfiguration()'
      config.tlsConfiguration = .forClient(

note: use 'makeClientConfiguration()' instead
      config.tlsConfiguration = .forClient(
                                 ^~~~~~~~~
                                 makeClientConfiguration