dev/py-oci: Update to 2.8.0

Breaking changes:

• Removed support for v1 auth tokens in kubeconfig files in th CreateClusterKubeconfigContentDetails class of the Container Engine for Kubernetes service
• Removed the IDCS access token requirement on the delete deleteOceInstance operation in the Content and Experience service, which is why the DeleteOceInstanceDetails class was removed
• Set compartment_id as a required parameter in list_stream_pools for streaming service

See the release note for other changes.

PR: 242720
Submitted by: maintainer
Relnotes: https://github.com/oracle/oci-python-sdk/releases/tag/v2.8.0