Drop the use of KubernetesServicePatch library for all CKF charms

[orfeas-k]

Context

As per the library's docstring
https://github.com/canonical/observability-libs/blob/2ba744e224a09404fb05b00cfe56f9908441472e/lib/charms/observability_libs/v1/kubernetes_service_patch.py#L4-L11

"""# [DEPRECATED!] KubernetesServicePatch Library.
The `kubernetes_service_patch` library is DEPRECATED and will be removed in October 2025.
For patching the Kubernetes service created by Juju during the deployment of a charm,
`ops.Unit.set_ports` functionality should be used instead.

Thus we need to drop it from the charms using it before October 2025

What needs to get done

Replace with set_ports

Definition of Done

No CKF charm uses the deprecated library

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The internal ticket has been created: https://warthogs.atlassian.net/browse/KF-6739.

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