fix: add back support to eu west 2 to be able to agentcore depoly

[ivanymc]

Description

Failed to agentcore deploy to eu-west-2, because it is missing in the aws-target

/agentcore/aws-targets.json:
    - [0].region: expected "ap-northeast-1" | "ap-south-1" | "ap-southeast-1" | "ap-southeast-2" | "eu-central-1" | "eu-west-1" | "us-east-1" | "us-east-2" | "us-west-2"

https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/agentcore-regions.html

base on the doc, we may also need to add back

eu-west-3
eu-north-1
ap-northeast-2
ca-central-1
sa-east-1

in the aws-target.

Related Issue

#822

Type of Change

• [ x ] Bug fix

[jariy17]

thanks for making this pr but we already closed this issue with this pr: #833