feat: support Role profile with SSO profile as a source profile

Solution for https://github.com/thomasmichaelwallace/serverless-better-credentials/issues/9

# ~/.aws/config file

[profile payment-suite-pro]
sso_start_url = https://xxx.awsapps.com/start
sso_region = eu-north-1
sso_account_id = 99999999999
sso_role_name = FullAccess

[profile spt-payment-dev]
role_arn = arn:aws:iam::111111111:role/AssumableAdmin
source_profile = payment-suite-pro

➜ export AWS_PROFILE="spt-payment-dev"
➜ npx sls info

> liberate-lambda@1.0.0 deploy:info:order-service /Users/marcin.kasprowicz@schibsted.com/dev/schibsted/payments/liberate-lambda
> sls info

[serverless-better-credentials]

Attempting to automatically open the SSO authorization page in your default browser.
If the browser does not open or you wish to use a different device to authorize this request, open the following URL:

https://device.sso.eu-north-1.amazonaws.com/

Then enter the code:

XVRL-XMWP

✔ serverless-better-credentials: credentials resolved from config sso profile: AWS_PROFILE (spt-payment-dev)

service: liberate-lambda
stage: dev
region: eu-west-1
stack: liberate-data-order-service
functions:
  liberateData: liberate-data-order-service

thomasmichaelwallace / serverless-better-credentials

feat: support Role profile with SSO profile as a source profile #10