fix: Intermittent failure in create_update_key_test.dart

[sitaram-kalluri]

- What I did

• The failure is because of the timing issue between the key creation date time and date time in the metadata.

var keyCreationDateTime = DateTime.now().toUtc();
expect(DateTime.parse(atData['metaData']['createdAt']).millisecondsSinceEpoch > keyCreationDateTime.millisecondsSinceEpoch, true);

Since, the check contains only greater than, if the date time in keyCreationDateTime and in metadata happens at the same time, then the test fails. To fix the issue, modified the condition as greater than or equal to:

expect(DateTime.parse(atData['metaData']['createdAt']).millisecondsSinceEpoch >= keyCreationDateTime.millisecondsSinceEpoch, true);