Update CloudWatch plugin's required IAM permissions

[adis-io]

Without this policy it won't be possible to use custom retention period

[lecaros]

@adis-io do you have a valid test case for this?
or a reference from the Cloudwatch's docs?

[adis-io]

@adis-io do you have a valid test case for this? or a reference from the Cloudwatch's docs?

No, I don't have test case, I've just had this issue in my case

From AWS Docs:

When you create a log group, by default the log events in the log group do not expire. To set a retention policy so that events expire and are deleted after a specified time, use PutRetentionPolicy .

[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[adis-io]

Anything is required from my side to get it merged?

[lecaros]

hi @adis-io. We'd expect the conversations/reviews to be resolved before merging. If it is resolved, please mark it as such
cc @patrick-stephens

[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[adis-io]

hi @patrick-stephens, @lecaros

Please take a look