Port 8079 update GitHub actions for aws

[phalbert]

Description

Update the AWS GitHub guides with the v2 actions schema

Updated docs pages

Please also include the path for the updated docs

• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/add-tags-to-ecr-repository.md
• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/add-tags-to-s3-bucket.md
• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/create-eks-cluster-and-deploy-app.md
• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/deploy-cloudformation-template.md
• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/manage-ec2-instances.md
• docs/create-self-service-experiences/setup-backend/github-workflow/examples/AWS/push-image-to-ecr.md

[aws-amplify-eu-west-1[bot]]

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