fix: adds missing permsions to the 'eks-workshop-ide-ec2' IAM policy

[ajmoorexyz]

What this PR does / why we need it:

This PR resolves the IAM issue reported here #1106

Without this change the following command fails which makes learning about EFS incredibly frustrating.

prepare-environment fundamentals/storage/efs

Which issue(s) this PR fixes:

Fixes # #1106

Quality checks

• My content adheres to the style guidelines
• I ran make test module="<module>" it was successful (see https://github.com/aws-samples/eks-workshop-v2/blob/main/docs/automated_tests.md)
• The PR has meaningful title and description of the changes that will be included in the workshop release notes

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

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[ajmoorexyz]

I've tested this by applying the IAM change manually. Testing changes to the ide aren't mentioned in https://github.com/aws-samples/eks-workshop-v2/blob/main/docs/automated_tests.md and fall into the What if my module can't be tested? camp.

Please advise.