Invalid secret key error on running build_runner

[sudormrfbin]

Describe the bug
When running dart run build_runner build, the process exits with the following error:

InterfaceError: Invalid secret key: FormatException: Invalid character (at character 209)
...DNoT2lwxUVlLVpJS2U3xG5SxEtRIiwic3xiIxoicDlydWZpcFBFZx00bm5xa3RRLVg1ZyJ9====
                                                                          ^

package:edgedb/src/connect_config.dart 998:5   parseCloudInstanceNameIntoConfig
package:edgedb/src/connect_config.dart 760:13  resolveConfigOptions
package:edgedb/src/connect_config.dart 636:7   parseConnectConfig
package:edgedb/src/client.dart 324:9           ClientPool.getNewConnection
package:edgedb/src/client.dart 49:21           ClientConnectionHolder.getConnection
package:edgedb/edgeql_codegen.dart 109:28      EdgeqlCodegenBuilder.build

Reproduction
Create an edgeql file and run build_runner.

Expected behavior
.edgeql.dart file is generated without errors.

Versions (please complete the following information):

• OS: Linux
• EdgeDB version: 5.4+867a505
• EdgeDB CLI version: 5.0.0+c9dfeec
• edgedb-dart version: 0.5.0
• Dart version: 3.4.3

Additional context
I'm using EdgeDB Cloud.

[sudormrfbin]

I can confirm that #42 fixes the issue.