[IT-3831] update role to deploy aws-ami-monorepo (#5)

Created a new GH OIDC role for deployment therefore need to update the role
in this repo.

depends on Sage-Bionetworks-IT/organizations-infra#1323

.github/workflows/deploy.yaml

@@ -26,7 +26,7 @@ jobs:
         uses: aws-actions/configure-aws-credentials@v2
         with:
           aws-region: "us-east-1"
-          role-to-assume: arn:aws:iam::867686887310:role/sagebase-github-oidc-packer-image-deploy"
+          role-to-assume: "arn:aws:iam::867686887310:role/sagebase-github-oidc-imagebuilder-deploy"
           role-session-name: GA-${{ github.repository_owner }}-${{ github.event.repository.name }}-${{ github.run_id }}
           role-duration-seconds: 3600
       - name: 'Sceptre Deploy'