CKF 1.9: Pin the charm dependencies in the integration tests of the `track/<version>` branches

[NohaIhab]

Context

As part of the CKF 1.9 release effort, we need to pin the channels of the charm dependencies in the integration tests after cutting the branches. This is to ensure that the charm versions are compatible and we are testing the versions that will be deployed in the 1.9 bundle

What needs to get done

Pin the channels of charm dependencies in the integration tests residing in the newly cut track branches to be the same as the channels in the 1.9 bundle definition

Definition of Done

PRs to pin charm deps are merged