Description of problem:

I can pass in a directory of resources used as input to the policy dryrun command.  If that directory happens to contain an ACM Policy resource, I would think we could ignore or handle it nicely.  Instead I get an error:

Error: the resource version was not found for kind Policy: if this is a custom resource, it may need an entry in the mappings file

Version-Release number of selected component (if applicable):

2.13.0-SNAPSHOT-2025-02-26-09-53-17

How reproducible:

Easy to reproduce

Steps to Reproduce:

1. Start with a working dryrun scenario where the resources used are contained in a directory
2. Copy a valid ACM Policy into your resources folder
3. Run the same dryrun command that was previously working.  The following error is returned:

Error: the resource version was not found for kind Policy: if this is a custom resource, it may need an entry in the mappings file

Actual results:

$ policytools dryrun -p policies/policy-limitmemory.yaml resources

1. Diffs:
2. Compliance messages:
   NonCompliant; violation - namespaced object mem-limit-range of kind LimitRange has no namespace specified from the policy namespaceSelector nor the object metadata
   Error: policy is NonCompliant
   $ cp policies/policy-limitmemory.yaml resources/
   $ policytools dryrun -p policies/policy-limitmemory.yaml resources
   Error: the resource version was not found for kind Policy: if this is a custom resource, it may need an entry in the mappings file

   Expected results:

The two dryrun commands above should have both worked I think

Additional info: