Add excluded_workspace_ids to policy sets data source

[Netra2104]

Description

excluded_workspace_ids needs to be added to the policy sets data source to accompany the workspace_policy_set_exclusion resource.

Remember to:

• Update the Change Log
• Update the Documentation

External links

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• Related PR

Output from acceptance tests

Please run applicable acceptance tests locally and include the output here. See testing.md to learn how to run acceptance tests.

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--- PASS: TestAccTFEPolicySetDataSource_basic (6.74s)
PASS

--- PASS: TestAccTFEPolicySetDataSourceOPA_basic (5.83s)
PASS

--- PASS: TestAccTFEPolicySetDataSource_notFound (2.19s)
PASS
...

[hs26gill]

LGTM