After the creation of the test plan for swatch contracts we need to start implementing the tests.

  This card focuses on the tests covering contract updates via Kafka messages.

  The following tests need to be implemented:

  contracts-update-TC001 - Process contract update message (existing contract)
  contracts-update-TC002 - Process redundant contract message

  Acceptance criteria:

  All 2 test cases (TC001-TC002) from the test plan are implemented and passing locally and in ephemeral environments.