v2.1.0

chore: add port output @nitrocode (#262)

## what

• chore: add port output

why

• It's better to grab the port from the output so I do not need to save the port to a local when calling the module, otherwise I'll have the port hard coded in two places

references

N/A

Reader independent scaling @jfcoz (#256)

## what

allow to scale reader independently from primary using promotion_tier >= 2

why

This allow to reduce costs

references

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-serverless-v2.how-it-works.html#aurora-serverless-v2.how-it-works.scaling