chore: encrypt SNS and Kinesis resources in integration test templates

[gracelu0]

Issue #, if available

N/A

Description of changes

Enable encryption using KmsMasterKeyId for SNS topic and StreamEncryption for Kinesis stream resources in integration test templates to follow best security practices.

Description of how you validated changes

Ran updated integration tests successfully.

Checklist

• [x] Adheres to the development guidelines
• [ ] Add/update transform tests
  • [ ] Using correct values
  • [ ] Using wrong values
• [x] Add/update integration tests

Examples?

Please reach out in the comments if you want to add an example. Examples will be added to sam init through aws/aws-sam-cli-app-templates.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[gracelu0]

Have you tested that these integration tests are still deployable after the change?

I ran the updated integration tests locally and they pass, so they do deploy successfully still after the change.