v2.3.0 SQS Least Privilege

Upgrade when time permits.

I have removed sqs:GetQueueAttributes from the error queue policy, in case users consider queue attributes sensitive. Thank you to @fbuchmeier-abi !

Use the new ErrorQueueAdditionalPolicyStatements parameter for desired cross-account access. Customization possibilities...

The ReadMe now references the Cloud Efficiency Hub, a database of community-contributed cost inefficiency reports. Check out this useful resource and add your own contributions...